How to solve ERR_NAME_NOT_RESOLVED problem in 12 steps



The ERR_NAME_NOT_RESOLVED error usually appears when trying to connect to a website. When this error occurs, a message appears indicating that the web page is unavailable. You will not be able to overcome this error and will not be able to access the website.

Essentially, the ERR_NAME_NOT_RESOLVED error is caused by problems with your DNS address. Your DNS address on the Internet is blocked for various reasons, so the ERR_NAME_NOT_RESOLVED error occurs.


This Webpage Is Not Available ERR_NAME_NOT_RESOLVED


If you suddenly receive an error message saying “Error 105 (net:: ERR NAME NOT RESOLVED): Unable to resolve the server’s DNS address” while browsing, this means that the DNS lookup failed. This type of error is one of the most common errors that can occur when using the Chrome browser. And since it is a fairly common error, the solution is also quite simple.

Do you get ERR_NAME_NOT_RESOLVED when browsing in Chrome browser? Sometimes this error affects several web pages while in other cases it only affects certain web pages. In any case, this error prevents the loading of web pages. An unrecoverable name error in Google Chrome technically means that the domain name cannot be resolved. As we all know, DNS (Domain Name System) is responsible for domain name resolution, and every domain on the Internet has a name server that allows DNS to resolve domain names. If for some reason DNS cannot resolve a name server, it is because the site is unavailable: ERR_NAME_NOT_RESOLVED.

There may be several reasons for this error. In general, the error may be caused by an incorrect computer or router configuration, or a problem with the web page you are trying to visit and which may not be available. Whatever the reason, here you can try an effective solution to fix the err_name_not_resolved chrome. And I am sure that one of them should solve the problem.


What causes the “ERR_NAME_NOT_RESOLVED” error?

There are several reasons why domain name resolution may not work. One of the most common reasons is that the DNS server is (temporarily) unavailable. In this situation, if there is no record for the site you want to access in your browser’s cache or in the DNS cache of your operating system, the DNS cannot resolve the domain name. The above-mentioned address records by themselves may be a possible cause of the “ERR_NAME_NOT_RESOLVED” error in Chrome.

This error may occur, for example, when a browser tries to reply to a DNS query with a cached address if the IP address has changed during this time.

Other possible causes of this error are router problems, misconfigured Internet settings, Chrome’s prediction service for faster page loading, malware, and faulty security software.


What does the error message “ERR_NAME_NOT_RESOLVED” mean?

If you received an error message “ERR_NAME_NOT_RESOLVED“, Chrome reports that it was unable to find the IP address that matches the domain name of the site you entered.

In this case, you will not be able to access the site because the IP address is required to connect to a web server.

This error may occur regardless of whether you are using Chrome on your desktop (Windows, macOS, or Linux) or mobile device (Android or iOS).

This error is not limited to Chrome; it may also occur in other browsers such as Firefox or Safari. However, you will get another error message from Google Chrome if DNS cannot resolve the domain name when you try to access the website.


How to fix the ERR_NAME_NOT_RESOLVED error in Chrome?

Solution 1: Try another browser

If you don’t want to waste time trying to figure out how to get around this error, you can just switch to another browser.


Solution 2: Check your antivirus program

Depending on the user, the err_name_not_resolved error may sometimes occur due to your antivirus program.

However, you can solve the problem by simply checking your antivirus settings and disabling some features. If this does not work, you can also try to completely disable your antivirus program, although this is not recommended to do.


Solution 3: Reinstall Chrome / try the beta or canary version

According to users, an err_name_not_resolved error can occur if your chrome setting is damaged. It can happen for different reasons, and if you want to solve this problem, you need to reinstall Chrome.

The procedure is very simple: After uninstalling Chrome, just reinstall the latest version and see if it helps.

Some users also recommend trying the beta or canary version. These are future versions of Chrome, for which the latest updates and patches are often available. So if you need to solve the problem as soon as possible, you should try one of these versions.


Solution 4: Use Command Prompt

1.) Run the command prompt as administrator by pressing the Windows + X keys.

ERR_NAME_NOT_RESOLVED - Use Command Prompt - Step 1

2.) When the command prompt opens, type the following commands:

  • ipconfig /flushdns
  • ipconfig /renew
  • ipconfig /registerdns

Few users have reported that this problem may affect other browsers, such as Internet Explorer or Microsoft Edge. You can solve this problem by typing the following text on the command prompt and pressing the “enter” key:

  • netsh winsock reset


Solution 5: Change your DNS

1.) Right-click the network icon in the taskbar and select a network from the menu.

ERR_NAME_NOT_RESOLVED - Change your DNS - Step 1

2.) When a new window opens, click Change adapter options.

ERR_NAME_NOT_RESOLVED - Change your DNS - Step 2

3.) Right-click on your network connection and select Properties.

ERR_NAME_NOT_RESOLVED - Change your DNS - Step 3

4.) Select the Internet Protocol version 4 (TCP/IPv4) and click Properties.

ERR_NAME_NOT_RESOLVED - Change your DNS - Step 4

5.) Select Use the following DNS server addresses and enter as the Preferred DNS server and as the Alternate DNS server. (You can also use as the Preferred DNS Server and as the Alternate DNS Server).

ERR_NAME_NOT_RESOLVED - Change your DNS - Step 5

6.) After you have changed the DNS, click the OK button to save your changes.


Solution 6: Disable the DNS Prefetching in Chrome

1.) Press the Menu button in the upper right corner and select Settings.

ERR_NAME_NOT_RESOLVED - Disable the DNS Prefetching in Chrome - Step 1

2.) When the Settings window opens, scroll down and click the Advanced button.

ERR_NAME_NOT_RESOLVED - Disable the DNS Prefetching in Chrome - Step 2

3.) Scroll down to the Privacy section and uncheck Use a prediction service to load pages more quickly.

ERR_NAME_NOT_RESOLVED - Disable the DNS Prefetching in Chrome - Step 3

4.) After unchecking the option, restart Chrome.


Solution 7: Flush Chrome’s DNS cache

1.) Open a new tab in Chrome and type chrome://net-internals/#dns as the address.
2.) Now click “Clear host cache” and restart Chrome.

ERR_NAME_NOT_RESOLVED - Flush Chrome’s DNS cache - Step 1


Solution 8: Update your drivers

ERR_NAME_NOT_RESOLVED - Update your drivers

This problem can sometimes occur if the driver for your network adapter is not updated, so we recommend that you update it.

You can use the CD that comes with your device or download the necessary drivers from the network adapter manufacturer’s website.

If you cannot access the Internet using your PC, you need to use another device to download the necessary drivers.


Solution 9:  Install the latest updates

1.) Click on the menu icon in the upper right corner.
2.) From the menu, select Help > About Google Chrome.

ERR_NAME_NOT_RESOLVED - Install the latest updates - Step 1 and 2

3.) Chrome now looks for available updates on the new tab. If updates are available, they are automatically downloaded and installed in the background.

ERR_NAME_NOT_RESOLVED - Install the latest updates - Step 3

If updates are installed, restart Chrome and check if the problem persists.


Solution 10: Disable all of your extensions

1.) Click the menu icon in the upper right corner and go to “More Tools” > “Extensions“.

ERR_NAME_NOT_RESOLVED - Disable all extensions - Step 1

2.) Find the extension you want to disable and click on the small button next to it. Repeat this step for all the available extensions.

ERR_NAME_NOT_RESOLVED - Disable all extensions - Step 2

3.) Once you have disabled all of the extensions, restart Chrome.

When Chrome starts, check if there is a problem. If not, the problem must have been caused by an extension.

To solve the problem, activate all deactivated extensions one at a time until the problem occurs again. Once you have found the application causing the problem, remove it, and the problem will be definitively solved.


Solution 11: Restart your router

ERR_NAME_NOT_RESOLVED - Restart your router - Step 1

If you get the err_name_not_resolved error in Chrome, the problem may come from your router. Temporary network problems may occur and to solve them you need to reboot your modem/router.

Just press the power button on your router and wait about 30 seconds. Then press the power button again and wait until your router boots up fully. After starting the router, check if the problem persists.


Solution 12: Reset your Chrome browser

1.) Open the “Settings” tab in Chrome.
2.) Scroll to the bottom of the page and click the Advanced button.
3.) In the Reset and clean up, select Restore settings to their original defaults.

ERR_NAME_NOT_RESOLVED - Reset Chrome - Step 1, 2 and 3

4.) Press the RESET SETTINGS button to confirm.

ERR_NAME_NOT_RESOLVED - Reset Chrome - Step 4

Once Chrome is reset to its default value, check if the problem persists.


That’s it! Now that you have tried the 12 most efficient solutions for ERR_NAME_NOT_RESOLVED, you can try to reopen the site in Chrome and see if it opens. If not, just reboot your computer.

We hope that one of these methods solved the problem and fixed the error “ERR_NAME_NOT_RESOLVED” in Google Chrome on your Windows 10.

Frequently Asked Questions

If you receive an "ERR_NAME_NOT_RESOLVED" error message, Chrome is reporting that it couldn't find an IP address that matches the domain name you entered for the site.

In this case, you won't be able to access the site because the IP address is required to connect to the web server.

This error can occur whether you are using Chrome on a desktop PC (Windows, MacOS, or Linux) or on a mobile device (Android or iOS).

  1. Run the command line as an administrator. To do this, press the Windows + X key combination to open the main user menu and select Command Prompt (Admin) from the menu.
  2. When the command prompt opens, type the following lines and press Enter after each line :
  • ipconfig /flushdns
  • ipconfig /registrations
  • ipconfig /release
  • ipconfig /update
  • NETSH directory reset winsock
  • NETSH int ipv4 reset reset.log
  • NETSH int ipv6 reset reset.log
  • Logout

The most common reason for the "This website is not available" error message is a DNS lookup error. The DNS network accesses websites by their domain name, which is the URL of the website that you normally enter in the top search box of your Internet browser.

  1. DNS - Internet Name Resolution.
  2. Troubleshooting
  • Changing web browsers
  • Turning off the firewall
  • Restart the router
  • Select a different DNS server


DNS PROBE FINISHED NXDOMAIN: 9 guaranteed solutions to the chrome problem

If your Chrome browser reports an error saying “This web page is not available“, it is because of the DNS PROBE FINISHED NXDOMAIN error. Here you will have the guaranteed steps you need to take to fix this error on your Windows 10 computer.



When you try to access a website by entering its name, your computer’s web browser uses the help of a DNS server to find the IP address of the website you are trying to access.

For example, if you type youtube in your Chrome browser, the DNS server automatically returns to Chrome the IP address ( of that site.

However, sometimes the DNS server does not provide this information to Chrome, which leads to DNS error messages.

The DNS PROBE FINISHED NXDOMAIN error code in Windows 10 is essentially trying to tell you that the DNS lookup failed when the Chrome browser tried to access the desired website.



The DNS_PROBE_FINISHED _NXDOMAIN problem starts because the IP address does not match the DNS computer. More technically, DNS translates all messages of the target domain into an IP address.

The real problem occurs when someone enters a URL into their browser; finding a server with the corresponding server IP depends on the DNS. In general, the search process is redirected to the target site, but if DNS does not work, it will cause errors. In this case, the browser will display an error message “DNS_PROBE_FINISHED_NXDOMAIN“.

The message “NXDOMAIN” is an abbreviation for “Non-Existent Domain“. This error occurs very often and there are effective solutions for the same error. Usually, different browsers offer different solutions which will work depending on the connection to the server. For example, in Google Chrome there is a message “This site can’t be reached“. In the case of Firefox, the message will be “Hmm. We’re having trouble finding that site“.


What is DNS and why does this error occur?

DNS is an abbreviation of the Domain Name System, which is responsible for matching the IP (Internet Protocol) address with the domain name. As a rule, we use a domain name to visit a website (for example, In fact, it is the IP address that allows us to successfully visit the site. Each domain name has a valid IP address (for example, one of’s IP addresses is We use a domain name instead of an IP address because the domain name is easier to remember.

Every time you enter a domain name in your browser, DNS looks for the IP address of the domain name and returns the result. If DNS finds the IP address, you can successfully visit the website. If DNS does not find the IP address, you may get DNS errors such as “DNS_PROBE_FINISHED_NXDOMAIN“.



As mentioned earlier, the DNS_PROBE_FINISHED_NXDOMAIN error is caused by a problem with the domain name system, usually because the user’s computer cannot resolve or translate the IP address of the target website. This error is very similar to the “DNS server isn’t responding” problem. If you encounter a temporary DNS error, you will also encounter the INET_E_RESOURCE_NOT_FOUND error.

The computer uses the DNS defined in your router or modem. Usually, this is the DNS of your ISP (Internet Service Provider). In most cases, using a public DNS server will be the most effective choice. However, the problem may also be due to a wrongly configured HOSTS file.

Due to this problem, the user may be denied access to some or all of the web pages. In this situation, it is difficult to understand the meaning of the error and its cause. Many users start looking for answers to the Internet; however, users almost are never given detailed instructions with pictures.

Fortunately, we have prepared a detailed explanation of how to fix the error code: DNS_PROBE_FINISHED_NXDOMAIN in chrome.


  • TIP: One thing we recommend is to try to access another site first. If you find that you can access other sites but not a specific site, the problem may be on the other end and not with you. If so, you may have to wait for a while and try again later.


How to fix DNS PROBE FINISHED NXDOMAIN browser error?

Fix #1: Check your antivirus

If you received the DNS_PROBE_FINISHED_NXDOMAIN error in Windows 10, the problem may be related to your antivirus.

To solve the problem, we recommend you to change the configuration of your antivirus and disable some of its functions. If this does not work, the next step is to completely disable your antivirus program.


Fix #2: Use the Command Prompt

1.) Press the Windows + X keys to open the main user menu. Select the Command Prompt (Admin) on the menu.


2.) When the Command Prompt opens, type the following texts and press the Enter key:

ipconfig /flushdns


3.) When the process is complete, close the Command Prompt and make sure that the problem is solved.

If the flushdns command does not fix this error, you can also try the following commands:

  • ipconfig /all
  • ipconfig /renew
  • ipconfig /release
  • ipconfig /flushdns
  • netsh int ip set dns
  • netsh winsock reset

Fix #3: Use Google’s Public DNS

1.) Click the network icon in the taskbar and select a network from the list.


2.) Then click on the Change adapter options.


3.) Now, locate your network connection and right-click it, and then choose Properties from the menu.


4.) Select the Internet Protocol Version 4 (TCP/IPv4) and then click the Properties button.


5.) Select Use the following DNS server addresses option and type as the Preferred DNS server and as Alternate DNS server.


6.) Once you’re done, click the OK button.

Your DNS will be changed, and hopefully, the issue should be resolved.


Fix #4: Reset your Chrome to default

1.) Open a new tab in Google Chrome and type chrome://flags/.
2.) Then, click Reset all to default button.

DNS PROBE FINISHED NXDOMAIN - Reset Chrome to default

3.) Restart your Chrome browser and check if the issue is resolved.


Fix #5: Restart the DNS Client service

1.) Press the Windows Key + R and enter the services.msc

DNS PROBE FINISHED NXDOMAIN - Restart the DNS Client service - Step 1

2.) Next, find the DNS Client service, right-click it, and then choose Restart from the menu.

DNS PROBE FINISHED NXDOMAIN - Restart the DNS Client service - Step 1

3.) After restarting your DNS client, close the Services window and make sure that the problem is solved.


Fix #6: Disable your VPN software

Many users use VPN to protect their network privacy, and while VPN clients are extremely useful, they can sometimes cause some problems with the DNS.

To solve this problem, it is strongly recommended to temporarily disable your VPN client and see if it solves the problem.

If disabling your VPN client does not solve the problem, you may need to remove the VPN client from your PC temporarily. Users have reported problems with the Cisco AnyConnect Secure Mobility Client, but almost any VPN client can cause this problem.

To completely remove the VPN from your PC and avoid any problems in the future, we recommend you to use uninstall software to remove it.

If you are not familiar with it, the uninstaller is a special application designed to remove programs from your PC. Besides uninstalling programs, this application also removes all files and registry entries associated with this program. So it will be as if the application has never been installed on your computer.


Fix #7: Disable your proxy

1.) Press Windows Key + I to open the Settings.

2.) When the settings app opens, click the Network & Internet.

DNS PROBE FINISHED NXDOMAIN - Disable proxy - Step 1 and 2

3.) Select Proxy from the left menu and disable all options in the right pane.

DNS PROBE FINISHED NXDOMAIN - Disable proxy - Step 3

After that, your proxy server must be disabled and your problem will be solved.

However, your proxy servers should not be ignored. Many users rely on proxy servers to protect their privacy, but sometimes your proxy can cause such errors.


Fix #8: Check your extensions

1.) Press the Menu button in the upper right corner and select More tools > Expansions.

DNS PROBE FINISHED NXDOMAIN - Check your extensions - Step 1

2.) The list of extensions is now displayed. Disable all the extensions by pressing the on/off button.

DNS PROBE FINISHED NXDOMAIN - Check your extensions - Step 2

3.)If you have disabled all extensions, restart your browser and check if the problem persists.

If the problem is solved, you can try to enable the applications individually or in a group. This way, you can find and remove the problem extension.

When you find the problem extension, remove it from your browser, leave it off or update and see if it solves the problem.

In most cases, the NXDOMAIN FINISHED PROBE DNS error is caused by security or privacy extensions. So first turn them off and see if it solves your problem.


Fix #9: Update your browser

1.) Open your Chrome browser and click on the menu icon.

DNS PROBE FINISHED NXDOMAIN - Update your browser - Step 1

2.) From the menu, select Help > About Google Chrome.
3.) Now you will see the information about the version of Chrome, which you use. If updates are available, they will be downloaded automatically.

Once your browser is updated, check to see if there is still a problem. If the problem persists after upgrading to the latest version, you should think about upgrading to a beta or canary version of Chrome.

New versions of browsers offer new features and bug fixes, so it’s always a good idea to use them.


If you try to access a website and receive an error message, such as DNS_PROBE_FINISHED_NXDOMAIN, this can cause both irritation and anxiety. Fortunately, there are simple steps you can take to correct this chromatic error.

Despite the disappointment, the DNS_PROBE_FINISHED_NXDOMAIN error is usually quite easy to fix. Between clearing the DNS cache, updating the IP, and trying different DNS servers, it is hoped that you will be able to work on the Internet soon.

So, in this post, we discussed 9 ways to fix the DNS_PROBE_FINISHED_NXDOMAIN error in Chrome when you’re using Windows 10. Some of the most effective solutions include:

  1. Check your antivirus
  2. Use the Command Prompt
  3. Google’s Public DNS
  4. Reset your Chrome to default
  5. Restart the DNS Client service
  6. Disable your VPN software
  7. Disable your proxy
  8. Check your extensions
  9. Update your browser


  1. By restarting the DNS client service.
  2. Change the DNS server.
  3. Checking the local hosts.
  4. Checking the user's DNS domain.
  5. Unblocking and updating the IP address.
  6. Resetting web browsers.
  7. Stopping firewall/antivirus and VPN.
  8. Other methods.

This error is most often caused by a lack of Internet connection or an improperly configured network.

It can also be caused by an unresponsive DNS server or firewall preventing Google Chrome from accessing the network.

Depending on the cause of the problem, one of the following solutions should solve the host problem:

  1. Replace your DNS servers with public DNS servers.
  2. Clear the DNS cache in your Chrome browser.
  3. Clear the DNS cache on your local PC or Mac.
  4. Disable DNS pre-reading or prediction in Chrome.
  5. Change your local network settings
  6. Edit the host file
  7. Do not use unreliable proxies or VPNs.
  8. IP conflict due to multiple computers connected to the same wireless router
  9. Contact your Internet Service Provider (ISP).

  1. DNS probe fixes Done No Internet in Google Chrome.
  2. Perform a cleanup: By putting your system in a clean boot state, you can also determine if third-party applications or bootable objects are causing the problem. Check this problem in a clean boot state.
  3. Check your proxy settings: On the Start menu, click the search word "Internet Options" and press Enter.

DISM failed: absolute fix to the Windows 10 error


In this topic, we will talk about DISM Failed which is a common error in Windows 10. Deployment Image Service and Management or DISM is an integrated tool that allows network administrators to prepare, modify, and restore system images, including the Windows Recovery Environment, Windows Configuration, and Windows PE (WinPE). However, you can also use this tool to solve common problems related to the hidden image recovery of your computer.

If your device does not start up properly, has performance problems, or if you need to fix a specific error, you can usually use the System File Checker tool to scan and replace missing or damaged system files using a hidden recovery image in your installation.

The only caveat is that the SFC tool will not work if one or more files in the Windows 10 image are corrupted. If you are in this scenario, you can use DISM to restore the “install.wim” image and then use SFC to restore the installation without having to reinstall the operating system from scratch.


What Does DISM Do

The Deployment Image Servicing and Management Control Tool provides three options for Windows 10 image recovery, including Check Health, Scan Health, and Restore Health, which you want to run in this order. Depending on the severity of the problem, you can also use special settings with the Restore Health option to restore a locally available image using different source files.

In this DISM Failed Windows 10 fix, we will look at the steps to use DISM and SFC tools using a command prompt to restore your device.

Important: Although these are non-destructive commands, you will make changes to the system. It is recommended that you make a temporary full backup before you get started.


The most common error messages for DISM Failed and why it happens:


      1. DISM failed no operation was performed
      2. DISM failure when attempting to copy boot files
      3. Error Code 87, 112, 11, 50, 2, 3,1726, 1393, 1910, etc.
      4. Dism.exe failed validating command line, to load wim manager
      5. DISM failed while processing command cleanup-image, add-package
      6. DISM failed 0x8000ffff, 0x800f0954, 0x800f081f: The Source File Couldn’t be Found
      7. DISM failed to load the provider, to unload offline registry, to flush file buffers, to set the windows directory, mount the image

We execute a DISM command to recover damaged system files. This is therefore a very important command for diagnosing problems with Windows PC error. If a DISM failure occurs, several error messages may appear. However, the solutions are very common.


How to Fix DISM Failed

Solution 1: Check your Antivirus or Security Software

Antivirus software installed on your computer can cause many problems (e.g. compatibility problems and file loss). Unfortunately, it will also cause a DISM Failed error. Antivirus software in the security program is able to interfere with your system and any critical process.

Therefore if possible, I advise you to disable all antivirus/protection programs or remove them temporarily and then repeat the DISM scan to see if it works.

  • If this has helped solve the problem of DISM not working, you should consider modifying the antivirus software or disabling the security features.
  • If this method did not help, it means that the DISM error has nothing to do with the antivirus software and you should continue to see other methods.


Solution 2: Execute DISM Command in “Clean Boot” Mode

This method works when a DISM fails due to a service conflict.

  1. Open the Settings application by clicking on windows and selecting settings (you can also open it by pressing Win + I directly).
  2. Scroll down and select update & security.
  3. Switch to the recovery option on the left pane.
  4. In the right pane, look for the “advanced startup” section. Then click the “restart now” button below it.
  5. Select troubleshoot in the Select Options window.
  6. Select advanced options, then click the command prompt.
  7. Select your account to continue.
  8. Run a DISM command (for example, DISM /Online /Cleanup-Image /Check Health) and you will see it.

DISM Failed - Execute DISM command in clean boot


Solution 3: Specify/Change the Correct Location for the Install.wim File

When you get the source files could not be found error, you need to check the location of the install.wim file. Under these conditions, you will need the help of a boot floppy (or at least a system ISO file).

Important: the DISM command is case sensitive; before executing the command, you should make sure that each word is spelled correctly.

How to specify the correct location for the install.wim file:

  1. Keep a boot disk at hand (if it is an ISO file, you should create a boot disk with it).
  2. Open the Windows search window and type cmd.
  3. Right-click on the command prompt and select run as administrator, remembering the letter of the boot disk.
  4. Enter this command in the command line window: DISM /Online /Cleanup-Image /RestoreHealth /source:WIM:F:\Sources\Install.wim:1 /LimitAccess (* is the boot media drive letter). Then press the “Enter” key on your keyboard.
  5. Wait for the command to finish.

DISM Failed - how to specify the correct location for the install.wim file

How to copy install.wim (from the boot drive to the local C: drive):

  1. Insert the boot disk in your computer or mount the ISO file and create it.
  2. Find the install.wim file and copy it with ctrl + c.
  3. Go to your local C: drive (if your system is installed on another drive, please go there). Then paste the file by pressing ctrl + v.
  4. Run a command prompt as administrator and type DISM /Online /Cleanup-Image /RestoreHealth /source:WIM:C:\Install.wim:1 /LimitAccess (C is your system location).
  5. Then press the “Enter” key and wait for the command to be finished.


Solution 4: Disable Read-Only Option in Install.wim

  1. Open the file explorer to find the wim file.
  2. Right-click and select properties.
  3. See the section attributes below.
  4. Disable the read-only option.
  5. Click apply and confirm by clicking ok at the bottom.
  6. Now, run the DISM command, specifying the source again.

DISM Failed - Disable Read-Only Option in Install.wim


Solution 5: Cleaning System Image Components

  1. Run command prompt as administrator.
  2. Type or copy and paste the command into the administrator: command prompt window – exe /online /Cleanup-Image /StartComponentCleanup.
  3. Press the “Enter” key on your keyboard and wait for the command to finish.
  4. Reboot your computer and try the DISM scan again.


DISM Failed - Cleaning System Image Components

If this command fails, you can try your luck with the following commands:

  1. DISM /Online /Cleanup-Image /StartComponentCleanup
  2. DISM /Online /Cleanup-Image /AnalyzeComponentStore
  3. exe /online /Cleanup-Image /StartComponentCleanup
  4. exe /online /Cleanup-Image /StartComponentCleanup /ResetBase


Solution 6: Reset Windows Update Service

  1. Run command prompt as an administrator.
  2. Type net stop wuauserv and press enter.
  3. Wait for the command to finish.
  4. Repeat steps 2 and 3 to execute these commands in the following order: cd %systemroot%SoftwareDistribution, ren Download Download.old, net start wuauserv, net stop bits, net start bits, net stop cryptsvc, cd %systemroot%system32, ren catroot2 catroot2old, and net start cryptsvc.
  5. Reboot your computer and try to use DISM.


Solution 7: Run the Troubleshooter

  1. Press Win + I on the keyboard to open the settings.
  2. Select Update & Security (Windows Update, Restore, Backup).
  3. On the left pane select the troubleshoot option.
  4. Find Windows Update and select it in the right pane.
  5. Click on the button “Run the troubleshooter” that just appeared.
  6. Follow the on-screen instructions to complete the rest of the process.

DISM Failed - Run the Troubleshooter


Since finding different solutions everywhere can take some time, we have given you simple and easy steps to fix this error yourself. Just review the above solutions and one of them will definitely help you solve the problem with the DISM Failed error.

If not, it is also recommended to disable your proxy. Many users use a proxy to protect their Internet privacy, but sometimes your proxy can interfere with your system and cause these and other errors.

If the DISM scan failed to complete or execute on your computer, the problem could have been caused by your proxy.

Frequently Asked Questions:

If DISM has failed on your system, you can solve the problem by disabling some antivirus features or by disabling your antivirus program completely. If this does not help, you can try uninstalling your antivirus program. If you have uninstalled your antivirus program, check DISM again.

  1. Temporarily disable/remove antivirus. Third-party antivirus programs that you use on your PC are often responsible for various problems.
  2. Fix DISM errors by specifying/optimizing Install.wim.
  3. Update the DISM tool and clean the system image components.
  4. Troubleshoot your Windows update.
  5. Check your Internet connection.

The solution to DISM error 0x800f081f is to download a new ISO from the Microsoft website, copy the Windows 10 installation disc and specify it as the recovery source when you run the DISM command. Slipstreaming is the process of integrating updates (and additional drivers) and creating an updated Windows 10 Configuration Disc or ISO.

  1. Temporarily disable or uninstall your antivirus program.
  2. Check your version of DISM.
  3. Update the DISM tool.
  4. Reset your computer using the "Save My Files" option.
  5. Use the disk cleanup tool.

Network change detected: 10 complete Windows 10 bug fixes

If you receive the error “Network Change Detected, Your Connection Was Interrupted, ERR_NETWORK_CHANGED“, you are not alone.

Network Change Detected - Your Connection Was Interrupted - ERR_NETWORK_CHANGED

Internet access can sometimes be tedious. If you use the Internet, you probably found the error “ERR_NETWORK_CHANGED” in the Google Chrome browser. Or maybe you are just experiencing this problem and looking for a solution to fix this Chrome bug.

Most users reported this bug with the “Unable to access network” bug as well as the “ERR_NETWORK_CHANGED” bug. This prevents them from browsing through their Internet connection. Users have also linked this error to Google Chrome’s browser, as it is most often displayed in this browser.

Since this error can occur in all web browsers (Chrome, Edge, Firefox, and Internet Explorer), we will focus on Windows issues that cause these errors. It is unlikely that the error will occur in your browser.

  • Important: This guide applies to Google Chrome on Windows 10, Windows 8 or Windows 7 computers and notebooks.


Why does the “Network Change Detected” Error Appear?


In my experience, Chrome triggers this error when it detects that your computer’s IP address has changed. As you may know, each computer on your network must be assigned a unique IP address to connect to the Internet. Based on this IP address, your Internet service provider or the owner of the site may restrict access to sites.

One of the main reasons for changing your network is that your Internet connection goes through another tunnel. Usually, use VPN or proxy servers to change the IP address of your computer to get around these restrictions. Using public DNS also speeds up the domain resolution process and provides a location name that matches the IP address of the server.

Obviously, this is an error when connecting to the Internet. During my research I found that these are the main reasons:

  • Frequently connect/disconnect from the Internet.
  • Use a proxy server.
  • Any software that affects DNS settings.
  • Third-party extensions.

What does “err_network_changed” mean?

Most people may be curious to know what err_network_changed means and what it does with the Chrome browser. In general, when Chrome detects a sudden network change that prevents the browser from accessing the site. Then an error appears in Chrome’s browser err_network_changed. This could be any website, like Facebook, YouTube, etc. On the other hand, it can also be a browser error, which means that Chrome cannot retrieve information from online servers connected to this particular Internet connection. What are the possible anomalies in our system or connection that could cause a problem with the err_network_changed? Let’s discuss it.


Reasons for err_network_changed

There may be several reasons for the err_network_changed in Windows 10, but not only in Windows 10, the err_network_changed chrome problem may also occur in earlier versions of Windows. This may be a brief error in the Chrome browser itself, or your computer may not have adequate network identification. This usually happens when your computer’s TCP/IP settings are incorrect or your network adapters are faulty. Whatever the reason, we have a complete fix to help you solve the err_network_changed problem. So don’t forget to follow all the way through.


How To Fix the “Network Change Detected” Error

Let’s look at the 10 tried and tested fixes to the “network change detected” error.

Although this error can be frustrating, it can usually be corrected quickly. Try the following approaches.


Solution 1: Reboot the page

  • Click the round button at the top of the Chrome window to reload the page. This is often the quickest and easiest solution. This forces Google Chrome to reload the content of the site with a new Internet connection.
  • Important: Some web browsers call the reload function “Refresh”. Both terms have the same meaning.


Solution 2: Restart Google Chrome

  • Click on X in the upper right corner of the screen, then reopen Google Chrome as usual.
  • Tip: If you are not sure if you can remember the web page where you are after restarting your browser, bookmark before closing the window.


Solution 3: Reboot your computer

  • This is probably one of the most recommended technical tips in history, but it is famous for what works. Rebooting your computer from the Windows Start Menu refreshes your Internet connection and all open applications.


Solution 4: Remove unwanted networks

  • A Windows device may try to connect to too many networks at once. One way to fix this is to remove or forget about all the networks that you don’t need. To do this, open Settings > Network and Internet > Manage known networks, remove unwanted connections by selecting the network name, and select Forget.
  • Tip: To see which Internet connections are currently within range and may cause a conflict, select the Internet icon on the Windows 10 taskbar. Remove all these connections, except for the Internet connection you are using, using the method described above.


Solution 5: Restart your modem and router

  • Manually remove them from the wall and wait for about five minutes. Reconnect the devices and wait a few minutes until the network is back online. Then reboot your computer.


Solution 6: Perform a Windows update

  • This often solves a few computer problems as the process scans the system, downloads new files, and fixes known problems. To update Windows 10, go to “Settings” > “Updates and Security” and select “Check for updates”.
  • Important: Updating Windows may take some time if you haven’t done so for some time.


Solution 7: Update your Google Chrome

  • Like most web browsers, developers regularly update Chrome with security improvements, new features, and bug fixes. To update it, click the Advanced icon (three dots in the upper right corner of the screen), then select Update Google Chrome.
  • Important: If you can’t find this option in the menu, it means that your browser is updated with the latest version.


Solution 8: Clear your browser data

  • This is good advice to correct many browser errors. Click the Advanced icon in the upper right corner and select Settings > Advanced > Clear browser data > Clear data.


Solution 9: Delete the DNS settings

  • Select and copy ipconfig /flushdns to the clipboard, then open the Start menu. Select the link “Run command” that appears and press Ctrl+V. The process should be completed almost immediately.


Solution 10: Try another browser

  • Download and install Microsoft Edge, Mozilla Firefox, or another browser.


Compliance with this policy should solve the problem “Network Change Detected” in Google Chrome. If not, try:

Uninstall Chrome > Reboot Windows 10 > Reinstall Google Chrome

That’s it! This article should be useful for fixing the Network Change Detected error on your computer.

FAQ: Learn More About Network Change Detected in Windows 10

One of the most common reasons for this error is that your computer is set up for both Wi-Fi and wired connections and switching between them, so we need to disable the setting that you are not using.

Go to Control Panel, Network and Internet, Network and Sharing Center, change your adapter settings. Here you will find a list of devices. When you see the wired and wireless connections, right-click on the one you're not using and select Disable.

  1. Check your computer for malware.
  2. Try logging into a different browser.
  3. Update all drivers.
  4. Uninstall or reinstall the VPN software.
  5. Reinstall Google Chrome.
  6. Restart the modem.
  7. Clear the DNS settings.
  8. Reset IP/TCP.
  9. Use Google's public DNS
  10. Clear navigation data in Chrome.
  11. Turn off the "Energy Efficient Ethernet" feature.
  12. Disability prediction services in Chrome
  13. Use Ethernet or Wi-Fi on the same device.
  14. Do not use Google IPv6 DNS

If you are using a Wi-Fi router to connect your computer to the Internet, the first step is to check that the router is working correctly.

Sometimes there are problems with your Wi-Fi router that can cause this error message.

Causes of "Err Network Changed" error:

  1. Frequent connection/disconnection to the Internet.
  2. Use of a proxy server.
  3. Any software that affects DNS settings.
  4. Third-party extensions.

Default gateway not available: 6 detailed solutions for Windows 10 error

When we surf the Internet and explore websites, we often encounter a problem connecting to the Internet, and when we try to find the cause, we get a warning that the “default gateway not available“. Now let us know what it means and how we can fix it in Windows 10.

What is the default gateway?

The default gateway is a router or network node in a computer network system that acts as a transmission leap to another network system if the routing table does not specify the IP address for the next-hop to transmit a packet to the target node.

Thus, the default gateway serves as an access point to other networks when one network wants to communicate or send data packets to another network. This includes changing the IP address and subnet mask of the system and network topology.

In general, each of the components on each network supports a routing table that specifies the port or interfaces to be used for communication, the rules to follow, and the route by which specific data packets will be delivered over the network.

If an IP packet, in any host instance, does not find a suitable set of rules and routes to deliver the packet to its destination address, it selects the default gateway for the rest of the routing process.

Therefore the default gateway is defined by a set of specific configurations known as the default route. In small offices or home networks, the router connecting the local network to the Internet acts as the default gateway for all network components.

Reasons for the “default gateway not available” error

You may have a connection problem with limited Wi-Fi access. When troubleshooting the network the error “The default gateway not available” is displayed and the problem is not solved. You will see a yellow exclamation mark on the Wi-Fi icon in the system tray and you will not be able to access the Internet until the problem is solved.

Default gateway not available in Windows 10

The main reason for this error seems to be damaged or incompatible network adapter drivers. Outdated router settings and drivers may also cause this problem. Some users have reported that McAffee security solutions can sometimes block your connection. In some cases, this error can also be caused by malware or viruses, so we need to solve the problem completely. So, without wasting time, let us see how to actually fix the “default gateway not available” in Windows 10, using the solutions below.

Solutions for the default gateway unavailable error

Solution 1: Temporarily disable the antivirus software

Default Gateway Not Available - Temporarily disable your antivirus software

It is known that antivirus applications cause problems with the network and Internet connections of Windows 10. You can easily check if your antivirus software interferes with your connections by temporarily disconnecting it.

If you can connect to the Internet without getting the “default gateway not available” error after disconnecting these applications, it is very likely that they cause the error.

Here is how to temporarily disable any antivirus applications.

Note: Be sure to enable Windows Defender when using a system without a third-party antivirus program. This is an easy-to-use security solution built into Windows 10, which provides basic protection against most threats.

  1. Right-click the blank area in the taskbar and select Task Manager.
  2. If the Task Manager is running in compact mode, be sure to expand the details by clicking on the Mode Details button.
  3. Use the title menu at the top of the window to go to the Start tab.
  4. Find your antivirus application in the list and select it by clicking once.
  5. Click the “Disable” button, which is now in the lower right corner of the window. This will disable the application when you start the device.
  6. Reboot your computer and try to connect to the network again.

Solution 2: Remove McAfee from the computer

Default Gateway Not Available - Remove McAfee Antivirus

Many users reported that removing McAfee applications from their devices helped correct the error “The default gateway not available”. If you are using such applications, we recommend that you remove them temporarily and check if they interrupt your network connection.

If you find that your McAfee product has caused network errors in Windows 10, we recommend that you contact customer support. You can contact them by clicking on this link and looking at the options available.

  1. Open the Start menu by clicking on the Windows icon at the bottom left of the screen. You can also press this key on your keyboard to open the menu.
  2. Click Settings on the left side of the context menu. It is marked with a pinion icon. For quicker access, simply use the Windows + S shortcut keys.
  3. You will then see a new window with many system options. Click on Apps.
  4. Stay on the default page and wait for the applications to load. This may take some time, depending on the number of applications installed on your device.
  5. Use the search function to find “McAfee”.
  6. Select the McAfee product, then select the “Delete” option.
  7. Follow the on-screen instructions to remove your McAfee product from your device. If there are other McAfee requests in the list, repeat these steps to remove them.
  8. Reboot your computer after the uninstallation is complete. You should be able to test your Internet connection immediately.

Note: If McAfee was pre-installed on your system, you may still have a few files left after uninstalling the application. Find these files and uninstall them manually. This may solve your problems.

Solution 3: Disabling the autorun function

Default Gateway Not Available - Disabling the autorun function

Although Autorun changed the game in Windows 8, it can cause network conflicts on newer systems. Fortunately, you can use the Registry Editor, which comes with all copies of Windows, to disable this feature and check to see if you are logged back in or not.

Attention: Before you start working with this tutorial, we recommend that you create a backup copy of the registry. If you do not know how to create and import registry backups, see “Backing up, restoring, importing and exporting the registry” in Windows Ninja.

  1. Press the Windows + R keys on your on-screen keyboard to open “Run”, then type “regedit” in the edit box. Press the OK key to launch the registry editor.
  2. You can navigate through the Registry Editor by expanding the folders with an arrow next to their names. Use it to find the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\Current Version\Winlogon.

You can also copy and paste the key to the address bar of the registry editor to speed up navigation.

  1. Right-click on AutoAdminLogon and select Edit from the context menu.
  2. Change the data value from “1” to “0” and click “OK”. Make sure not to change any other settings!
  3. Close the registry editor and reboot your computer.

Solution 4: Reset TCP/IP by Netsh command

Default Gateway Not Available - Reset TCP/IP with the Netsh command

The command line can be used to reset TCP/IP settings and possibly to solve problems with the default gateway. Just follow the steps below to learn how to do it.

  1. Press the Windows + R keys on the on-screen keyboard. This launches the Run utility.
  2. Type “cmd” and press Ctrl + Shift + Enter on the keyboard. This will launch a command line with administrator rights.
  3. When prompted, press “Yes” to allow the command line to make changes to your device.
  4. While at the command line, type the following command and press Enter to start it: netsh int ip reset
  5. Wait until the order is finished processing. Do not close the command line or shut down the computer.
  6. Reboot the device after completing the command and reset the TCP/IP settings.

Solution 5: Update your network adapter drivers

Default Gateway Not Available - Update your network adapter drivers

It is very important for drivers to be aware of the latest versions. When errors are reported to the manufacturer, the manufacturer may introduce new fixes that may fix the “default gateway not available” error in Windows 10.

Here is how you can update drivers for your network adapter in just a few minutes. This process is automatic, which means you can do it easily.

  1. Click on the “Search” icon in the taskbar next to the Windows icon. The function is displayed using a magnifier. You can also open it using the Windows + S keyboard combination.
  2. Enter “Device Manager” and click on the corresponding result to launch it in a new window.
  3. Click on the arrow next to “Network adapter” to enlarge it.
  4. Right-click on the adapter and select “Update Driver”.
  5. Select “Automatically check driver software update” and follow the on-screen instructions to update drivers.
  6. After a successful update, restart your computer and check for problems with the default gateway.

Solution 6: Change the power management settings of the network adapter

Default Gateway Not Available - Change the Power Management settings for your network adapter

Some users have noticed that a certain power management parameter may cause problems with the Internet connection. This is because your system temporarily shuts down the network adapter, which causes a connection loss and displays the error “Default gateway unavailable”.

  1. Click the “Search” icon on the taskbar next to the Windows icon. The function is displayed using a magnifier. You can also open it using the Windows + S keyboard combination.
  2. Enter “Device Manager” and click on the corresponding result to launch it in a new window.
  3. Click on the arrow next to “Network adapter” to enlarge it.
  4. Right-click on the adapter and select “Properties”.
  5. Click on the “Power Management” tab using the title menu at the top of the window.
  6. Make sure the “Allow computer to shut down this device to save power” option is not checked. If it is, simply uncheck the checkbox by clicking on it.
  7. Click the OK button to finish making the changes. You can try to use your Internet connection and see if the error will return.


Most of our work depends on the Internet, so connection problems can be annoying. Both work and entertainment may stop. Errors such as the “default gateway not available” in Windows 10, are detected when diagnosing network problems. And since the default gateway is a critical network node for connecting to the Internet, users have no choice but to repair it as soon as possible.

The above list of solutions can be used to solve the problem quickly. Some solutions may require some technical expertise, but you can always follow the instructions and follow the procedure in a practical way.

We hope this tutorial has helped correct the error “default gateway not available” in Windows 10. Now you should be able to connect to the Internet without this problem.

Frequently Asked Questions:

  1. Install a new Ethernet driver.
  2. Change the channel of your wireless router.
  3. Change Power Management settings for your network adapter.
  4. Change the power saving mode of your wireless adapter.
  5. Change the frequency of your wireless router.
  6. Change the wireless mode to 802.11g.
  7. Use netshell reset command.
  8. Uninstall McAfee.

One of the reasons for showing that “default gateway is not available” is the McAfee security program installed in the PC. Hence, to remove this problem go to the control panel of your PC, then enter programs and then go to program and features option.

From this option go to add or remove program option and select McAfee and then completely uninstall it.

After you uninstall this program, your issue will be resolved. To make your system virus free, you can install some other security product.

Release your current IP by typing the following ipconfig /release and then press enter. This will release any assigned IP addresses and gateways from your computer.

Next you need to type in ipconfig /renew to get a new IP address or default gateway. On the screen your should see your new Default Gateway and IP Address. If you are using a router or your IP has not changed on your modem then the addresses may not have changed.

Your default gateway is on the same subnet as your computer, and is the gateway your computer relies on when it doesn't know how to route traffic.

If you don’t have a gateway your network communication have no problem. But you cannot communicate with other networks. That means your packet will not reach other networks.


How to Repair Veeam Installation

You can restore the installed Veeam Backup Enterprise Manager. So:

  • Run the setup wizard on the Veeam Backup Enterprise Manager server. For more information, see Veeam Backup Enterprise Manager. Run the Startup Configuration Wizard.
  • Read and accept the license agreement. For more information, see the Startup Configuration Wizard. Read and accept the license agreement.
  • In the Maintenance Mode step of the setup wizard, select the Restore option and click Next.
  • Specify the service account credentials that will be used to restore Veeam Backup Enterprise Manager. For more information, see “Restore”. See the section Defining service account settings.
  • In the “All is ready to install” step of the installation wizard, review the installation requirements and click “Install”.

The installation wizard will reinstall the Veeam Backup Enterprise Manager components. Wait until the installation process is complete and click Finish to close the Installation Wizard.

How do I completely uninstall Veeam Backup and Replication?

Use programs and components to uninstall Veeam Backup and Replication.

When a new program is installed on your system, it is added to the list in the “Programs and Components” section. If you want to uninstall a program, you can delete it in the “Programs and Components” section. If you want to uninstall Veeam Backup and Replication, you must first uninstall it in the “Programs and Components” section.

  1. Open “Programs and Components”.
  2. Open the WinX menu while holding down the Windows and
  3. X keys, then click on “Programs and Components”.
  4. Find it in the Veeam Backup and Replication list, click it, then click “Delete” to start deleting.

Uninstall Veeam Backup and Replication using the uninstaller.exe file.

Most computer programs have an executable file named uninst000.exe or uninstall.exe or something similar. You can find these files in the Veeam Backup and Replication installation folder.

Browse to the Veeam Backup and Replication installation folder.
Browse to uninstall.exe or unins000.exe. Double-click the uninstaller and follow the wizard to remove Veeam Backup and Replication.

Incompatible Veeam Backup version for Office 365 Server

This error occurs after downloading Veeam Explorer for Microsoft Exchange and trying to connect to VBO server. The error is a bit misleading because it is actually a version of Explorer and not the VBO server itself.

If you look at the zip file downloaded from VBO v3, you will see three installers.

The simple solution is to install a new version of the Explorer. The Dead Gift is a new home screen.

When the process is complete the restart of the Explorer session will be successful and you will see a list of mailboxes that have been backed up.

Reconnect the SQL Server Connection

All VAC data is stored in the main SQL Server database. For this reason, it is crucial that the connection between the VAC service and the SQL database is always guaranteed. There may also be situations where we need to change these connection settings, such as B., when we switch from one deployment type to another.

In all these cases, we are in a situation where the settings are stored in the database itself, but the database itself is not available. However, VAC has a special option to log into the console without logging into SQL to restore or modify it.

When we try to connect to the VAC, when the connection to the database is lost, we may get the following error:

This message is deliberately general in nature, because we want intruders not to brutally force the login screen to find out if SQL is unavailable, if the user is present, and so on. Д.

As administrators, we can restore an SQL connection using the following procedure:

  1. Log on the server where the VAC service is running.
  2. Stop the VAC service using the command line:
    stop VeeamManagementPortalSvc
  3. Run VAC in easy mode using the command line:
  4. Run VeeamManagementPortalSvc Lightweight
  5. Log in locally (or via remote desktop) on a computer with VAC web user interface.
  6. Open your browser and specify the URL https: // localhost: 1280.
    NOTE. Do not use the link created by the installer. This leads to the full domain name (FQDN) of the server which does not allow the connection. Registration should take place through the localhost interface.
  7. Log in to the user interface with a user who is the local administrator of a Windows computer running the VAC service. In the Simplified Mode, local administrators can still log on to troubleshoot database connectivity issues. In a distributed installation, if WEB01 is a web interface server and VAC is a VAC server, we need to connect to VAC \ Administrator.
  8. We are now connected to the VAC in Maintenance mode:
    As we can see there are only two possible operations and the default is to change the SQL connection settings. After fixing and saving this problem, the maintenance mode will be disabled and the SQL connection will be restored correctly.

NOTE: If we have configured the VAC theme to use a color other than blue by default, we will find that the maintenance mode will also revert to this color, because the parameter is also stored in a database that cannot be viewed . When the user interface returns to the color of our choice, this is a quick sign that the SQL connection has been restored.

The Veeam Backup & Replication console does not open when the hostname is changed.

If you change the host name for a computer with Veeam Backup & Replication installed, the console may not open with an error (see next screenshot):

The Veeam Backup service is stopped. An attempt to start the Veeam Backup service causes a problem.

While logging, the Veeam Backup service is trying to connect to SQL using the previous hostname. % programdata% \ Veeam \ Backup \ Svc.VeeamBackup.log:
The [database] information connects to SQL Server (CurrentUser = [NT AUTHORITY \ SYSTEM], ServerInstance = [<OldHostname> \ <SQLInstanceName>], Options = [Direct]).
Information [DB | Error] Failed to connect to the server.

To solve this problem, update the product configuration by specifying the current hostname using the following steps:

  • Open the Configuration Database Connection Settings program, which should be displayed in the “All Programs” menu of Veeam Backup & Replication server.
  • In this program, select Veeam Backup and Replication and click Next.
  • Find the server name. This field is formatted as follows: <Hostname> \ <SQLInstanceName>.
  • Change the first part of the server name to match the current host name of the Veeam Backup & Replication machine, and click Next.
  • Veeam connects to the database. Wait until this process is complete and click Next. The Veeam service shall be started.
  • When this is done, click Finish and try to log into the Veeam Backup & Replication console.

How to Specify Veeam Catalog Service Port

Veeam Backup Catalog is a function that means indexing the guest files of virtual machines. Veeam Backup Catalog includes Veeam Guest Catalog services that run on the following backup infrastructure servers: Veeam Backup Server and Veeam Backup Enterprise Manager Server.

  1. The Veeam Guest Catalog service on Veeam Backup Server works as a local directory. It collects index data for backup jobs on a particular Veeam Backup Server and stores this data locally in the Veeam Backup Catalog folder.
  2. Veeam Guest Catalogue Veeam Backup Enterprise Manager acts as a federal directory service. It interacts with Veeam Guest Catalog services on Veeam Backup Servers connected to
  3. Veeam Backup Enterprise Manager and performs the following tasks:
    1. Replicate index data from Veeam backup servers to create a federal directory.
    2. Store index data
    3. Allows you to search your computer’s guest operating system files in backup files.

Specify Service Ports

The step of the port setup wizard is available if you have manually configured the settings.

Specify the HTTP and HTTPS port numbers and select the certificate that will be used by Veeam Backup Enterprise Manager. This certificate is necessary to establish a secure connection to the Enterprise Manager website using the HTTPS protocol (standard port 9443). The Veeam plugin for the vSphere web client and the RestAPI client also uses this certificate to retrieve data over HTTPS.

The High Security Mode option disables the use of weak encryption to communicate with the computer on which Veeam Backup Enterprise Manager is running. This may affect the operation of third-party software installed on the same computer.

You can configure the values of port numbers used for communication between backup infrastructure components:

  1. Catalog of service ports. The directory service port is used by Veeam Guest Catalog Service to replicate directory data from backup servers in Veeam Backup Enterprise Manager. By default, port 9393 is used.
  2. The Veeam Backup service port. The service port is used by Veeam Backup Enterprise Manager to collect data from backup servers. In addition, Veeam Backup & Replication Console uses this service port to connect to the backup server. By default, port 9392 is used.
  3. The port of secure connection. The secure connection port is used by the mount server to connect to the backup server. The default port is 9401.

Verify and Check Global Catalog Port

At this step, the port through which the connection to the virtual machine with the “Global Catalog” role is established is checked.

You can override the following parameters for the Check global catalog port step:

Critical Step – Yes
Determines whether the virtual machine recovery phase is critical.
If you mark this step as critical, failure of one virtual machine in a critical group of virtual machines will interrupt the plan.

Server – %current_vm_ip_list%
The name of the server to be checked.
Note. It is necessary to use DNS name or IP address.

Port – 3268
Port number to verify access to LDAP GC service.
Location – Veeam Backup Server (not available for editing)
Determines whether the script runs on Veeam Backup & Replication server, VAO server or guest virtual machine.

Timeout – 300
Maximum time (in seconds) to perform a step.

Retries – 10
The number of attempts if a step has failed at the first attempt.

Failback & Undo Failover Action – Skip
Determines whether this step will be performed during the recovery operations after failure and rollback.

Test Action – Execute
Determines whether a step in DataLab is performed while testing the plan.

Performing Catalog Replication and Indexing

After performing backup tasks with indexing of the guest operating system file system enabled, perform directory replication to merge index files from multiple backup servers. During this process, Veeam Backup Enterprise Manager collects index data from multiple backup servers and stores it on Veeam Backup Enterprise Manager for viewing and searching files.

Veeam Backup Enterprise Manager provides two options for directory replication:

  • To perform directory replication manually, open the Options tab in the configuration view and click Update Now on the Search in Catalog tab.
    • Open the Options tab in the Configuration view to automatically start directory replication after each backup task.
    • On the Catalog Browse tab, select “Automatically update directory after each backup task” and specify other options if necessary.

Each launch of a directory replication task triggers a new task session, which can be followed on the “Sessions” tab in the configuration view. To view detailed information about a particular session, select it from the list of sessions and click the link in the “Status” column.

A Guide to Veeam Setup Best Practices

More and more companies realize that server virtualization is the way to modern data security. In 2020, VMware is still the market leader, and many Veeam customers are using VMware vSphere as their preferred virtualization platform. But backing up virtual machines in vSphere is only part of the service availability. Backup is the backbone of recovery. So it’s important that backups are always available at the right speed.

This guide presents Veeam Backup & Replication best practices. It is not complete documentation or a detailed explanation of the features. The Best Practices Guide is for professionals looking for answers and suggestions on various topics. It may be a design idea, the best way to use a function, possible pitfalls, etc. D. As a rule, this information has been developed, collected, and updated by the Veeam Solutions Architects team working on site with Veeam users. They do not explain theory, but practice.

Note that the best practices are not the only available answer. In most cases it will work, but it may be completely wrong in other circumstances. Make sure you understand the recommended best practices, or ask someone to do so.

K.I.S.S. design

It becomes more difficult for the IT department to manage and ignore too complex projects, and it is easier for an intruder to use them and stay in the background. Projects that are easier and easier to ignore are usually safer. Use the K.I.S.S. (Keep it simple stupid) Principle for your creations. KISS is an acronym for “Keep it simple, stupid” as a design principle established by the US Navy in 1960. The principle of KISS states that most systems work best when they are simple and uncomplicated. Therefore, simplicity should be a key design objective and unnecessary complexity should be avoided. Simple design is easier to control and is generally safe.

Adding security to an existing infrastructure is much harder and more expensive than thinking about designing a new infrastructure or upgrading an existing one. In a virtual infrastructure, it makes sense to create a master image that has been enhanced from the beginning. Remove all known attack vectors and access only when Veeam components are added and certain (port) openings or additional software are required for correct operation. Thus, all versions are consistent and up-to-date, which makes them safe in the database.

Make sure that the repository servers are physically protected.

Place the repository servers in a restricted area, because these servers contain a 100% copy of your production environment! The repository servers must be physically secure and have appropriate access control systems. This will restrict access. All those who have access are logged and controlled at certain defined levels.

Use a standalone Windows server

If you are protecting the entire environment, you do not want the Veeam repository to be associated with the same Microsoft Active Directory domain that you are protecting through a backup. Otherwise, you may have a chicken and egg problem with accounts trying to authenticate to a domain that is no longer available if everything is lost.

If the domain administrator account is compromised, we do not want that account to be able to override the password for the backup store account so that the hacker can access the backup files as well as the entire environment.

Protect physical or external cloud servers with Veeam Agent’s backup.

  1. You may have servers that Veeam cannot back up or replicate.
  2. Maybe physical servers or a virtual machine that is in a public cloud that you do not have access to a hypervisor (e.g. AWS),
    Azure-blue). For these servers, you can back up the iland cloud repository using Veeam Agent.
  3. Backups. This agent is installed in the guest operating system of the production server and does not require access at hypervisor level. Veeam Agent can be installed on Windows and Linux systems.

Note the bandwidth availability.

  1. The performance of Veeam Cloud Connect is highly dependent on the available bandwidth. For example,
  2. If you are trying to back up or replicate terabytes of data, but only 20 Mbps is available, you can
  3. Backing up should take a few days. The initial backup or replica may be important time, because all data has to be transmitted for the first time.
  4. When you can’t finish Timely progressive work can have a significant impact on your safety and confidentiality.
  5. It is also better to schedule external tasks outside working hours if possible. This allows you to allocate Veeam bandwidth instead of sharing it with your network end users.

Check your backups and replicas regularly.

The worst time to find out if your backups or replicas are damaged is when you need them. Check yours.
Backups and copies for replication to ensure that they are complete and acceptable when and how you do it
you need them. You can use Veeam Console to restore all VMs, VM files or guest OS files to your computer.
Surroundings. This process gives you confidence that your data will be available immediately if
There is a disaster.

  1. You can test the failover at any time and access your replicas in the iland cloud.
  2. This is useful not only to test the integrity of your replica data, but also to provide access to and
  3. The function works as it should. It may be necessary to update the existing network rules.
    or that new critical servers have been added to production but not yet replicated.

Physical deployment


In small to medium sized environments (up to 500 virtual machines), Veeam Backup and Replication Server, Backup Repository and Backup Proxy components are typically running on the same physical server. This is also known as deployment of a “model device”.

In large environments (over 2500 virtual machines), Veeam’s backup and replication services work best on separate physical or virtual servers. When multiple jobs are running at the same time and consume large amounts of CPU and RAM, it may not be possible to scale up a virtual backup and replication server to meet system requirements.

One of the advantages of running Veeam Backup and Replication Server on a physical server is that it runs independently of the virtual platform. This may be an ideal situation where the virtualized platform is recovering from a disaster.

In an enterprise environment, you can install additional VBR to speed up the disaster recovery process. You can reuse existing availability components, such as a repository or proxy server, for Veeam Backup and Replication.

Backup Proxy

The Backup Proxy is a compact architectural component of Veeam that sits between the data source and the backup destination, processing backup jobs and providing backup traffic. Backup proxy server tasks include retrieving VM data from the production storage and compressing, deduplicating and sending this data to the backup repository. With more than one virtualized (or physical) backup proxy, you can easily scale your backup infrastructure to fit your system size.

  • In a simple deployment scenario for small environments, Veeam Backup Proxy is automatically installed on the VBR as part of the Veeam Backup and Replication installation.
  • In advanced deployments, the Proxy role is manually assigned to one or more Windows servers. This offloads the Veeam backup server, reducing backup time and improving performance.

How to Setup and Configure Veeam Backup & Replication

Veeam Backup & Replication is the only solution that easily, reliably and flexibly protects all your cloud, virtual and physical workloads. Get rid of privacy, extortion protection, and compliance issues. Veeam saves time and money, simplifies administration, and minimizes costly downtime with key features that allow you to fully manage your entire backup data lifecycle. Now you can confidently focus on your business goals.

What is Veeam Configuration Backup?

By default, Veeam Backup & Replication is configured to create a daily configuration backup. You can change the schedule or run the backup manually.

Run the setup wizard.

To run the setup wizard:

  1. Download the latest Veeam Backup & Replication installation image from the Veeam product download page.
  2. Deploy the install image on the computer where you want to install Veeam Backup & Replication, or burn the image file to a flash drive or other removable media. If you want to install Veeam Backup & Replication on a virtual machine, use the built-in virtualization management software tools to mount the installation image on a virtual machine.
  3. To extract ISO content, you can also use the latest versions of utilities that can properly extract data from large ISO files and process it properly with long file paths.
  4. After you install the image or install your hard drive, Autorun opens a welcome screen with installation options. If Autorun is unavailable or disabled, start the Setup.exe file from the image or from your hard drive.
  5. In the Veeam Backup & Replication Welcome section, click Install.

Install Veeam Backup & Replication

Install Veeam Backup & Replication on a Microsoft Windows physical or virtual machine.

To install Veeam Backup & Replication, follow these steps:

Download the latest Veeam Backup & Replication installation image from the Veeam product download page.
You need to be logged in to your Veeam account. If you don’t have an account, register using your work email address.

  1. Deploy the installation image on the computer where you want to install Veeam Backup & Replication, or write the image file to a flash drive or other removable media.
  2. If you want to install Veeam Backup & Replication on a virtual machine, use the built-in virtualization management software tools to mount the installation image on the virtual machine.
  3. Run Setup.exe in the image or on your hard drive to open the welcome screen.
  4. In the Veeam Backup & Replication Welcome section, click Install.
  5. Leave the default settings at the “Software Features” step of the wizard.
  6. Install all missing software components on the “Check System Configuration” step of the wizard.
  7. In the default configuration step of the wizard, click “Install” to start the installation.

Select the license file and program functions

The step “Grant a license” is not obligatory. You can simply continue to install Veeam Backup & Replication and it will run in Free Edition mode. The Wizard will let you know if you already have a license on your computer.

Click Browse to provide the license file, whether it’s a trial or a purchased version. Find the * .lic file in Explorer and click Next.
Then you can select the components you want to install in the “Program Features” screen.

Veeam Backup & Replication
Veeam Backup Catalogue
Veeam Backup & Replication console

If necessary, you can click the “Browse” button to change the installation folder. Leave all three options selected and click Next to go to the system configuration check screen.

Check for Missing Software

At this stage, the wizard will check the system to make sure that all the necessary software is installed. The wizard will continue when all the necessary components are available on your computer. Otherwise, the screen of missing components will be displayed.

Select Install to install the missing components. Once the Wizard has finished installing, you will see a status screen where you can click Next to proceed to the next step. If you do not want the Wizard to install the missing components for you, exit the installation, install these components, and then run the Wizard again.

How to install and configure Veeam Backup

Step 1: Enter the PhoenixNAP Veeam Availability Console (VAC).
Step 2 – Install Veeam Management Agent.
Step 3 – Configure the management agent connection.
Step 4 – Install the Veeam Backup Agent.
Step 5 – Configure the Veeam Backup Agent and start the backup job.

The steps described in this article helped you install and configure Veaam Management Agent and Veeam Backup Agent using Veeam Availability Console.

How to install Veeam Agent

To start installing the Veeam Backup agent:

  • Log in to the Veeam service provider console.
  • Veeam Service Provider Console section.
  • From the left menu, click Managed Computers.
  • Click the Found Computers tab.
  • Select the check boxes next to the computers you need.
  • Click Install a Backup Agent.
  • The “Install Backup Agent” window opens.
  • In the “Backup policy to use” list, select the backup policy to be applied during the installation process.
  • The selected backup policy is used to configure the backup task settings after Veeam Backup agents are installed. You can select “No policy” if you do not want to configure the backup task settings during the installation process.
  • To configure a new backup policy, click “Create” and configure a new backup policy.
  • By default, the read-only access mode is enabled for all Veeam backup agents. To disable read-only access for Veeam’s backup agents, set the Enable read-only access to the user interface for the Backup Agent to Disable.
  • Backup agents. In the Enable read-only access mode section.
    To pass global settings of Veeam Backup agents, click Configure and specify the default global settings of Veeam Backup agents.
  • Click Apply.
  • Wait until the installation process is complete.
  • The installation process may take a few minutes.

How to Change Veeam Cache Location

Veeam Agent for Microsoft Windows, managed by Veeam Backup & Replication, supports the creation of recovery points in the backup cache, a temporary local storage where Veeam Agent creates backup files if the remote backup storage is unavailable. This can be useful if you are creating Veeam Agent’s backups using a backup policy: if some computers in the backup policy cannot access the remote storage during a scheduled backup, Veeam Agent creates backup files in the backup cache on those computers. When the target storage becomes available, Veeam Agent uploads the backup files from the backup cache to the remote storage so that the backup chain contains a sequence of recovery points that exactly match the backup schedule.

In Veeam Agent’s management scenario, the backup cache works the same way as Veeam Agent, which works offline. For more information, see Veeam Agent. See the “Backup Cache” section in the Veeam Agent User Guide for Microsoft Windows.

In addition to the Backup Cache features and limitations listed in the Veeam Agent for Microsoft Windows User Guide, the following applies to Veeam Agent running in managed mode:

  • You can specify backup cache settings in the Backup Policy properties that target the following types of backup stores:
  • Veeam Backup Repository
  • Cloud Repository
    • To simplify setting up the backup cache on multiple Veeam Agent computers added to your backup policy, you can instruct
    • Veeam Agent to automatically select the location of the backup cache on each computer.

Select the location of the performance cache

During the wizard performance data caching phase, select the directory where the performance cache should be located.

The performance cache is the space on the hard drive where Veeam ONE stores performance data in real time when collecting this data. Performance cached data is used for Veeam ONE Monitor dashboards and views. A performance cache on the disk can significantly reduce the amount of RAM used on the computer where the Veeam ONE Server component is running.

By default, the performance cache is stored in folder C: \ PerfCache. To store the cache in another folder, click “Browse” next to the “Performance Cache” field and specify the path to the new folder.

Consider the following recommendations when choosing a location for your performance cache:

  • Make sure that the drive where the performance cache is located can quickly process read and write requests. Do not place the remote cache on networks with high latency values.
  • In large monitoring environments, place the performance cache on the local SSD on the computer running the Veeam ONE Server component. Usually one hard drive is enough for small and medium size video surveillance systems.
  • The length of the path to the performance cache folder cannot exceed the maximum Windows path limit.
  • Make sure you have enough space for the performance cache. The cache is cleared hourly when new data is collected. However, large amounts of disk space can be used in large surveillance environments. For example, in Advanced Scalability Mode, the cache can take up to 6 GB of storage per 1000 virtual machines during peak workloads.

Specify backup cache settings

The Cache Backup Wizard step is available if you have backup files stored in a remote location: a network shared folder, Veeam’s backup repository, Veeam Cloud Connect or Microsoft OneDrive.

Specifies the settings for the backup cache:

  • Select the Include backup cache checkbox.
  • In the Location field, enter the path to the folder on your computer where you want the backup files to be saved.
  • In the Maximum size field, enter the size of the backup cache.
  • When setting the backup cache size, assume the following:
    • Each full backup file may take up about 50% of the size of the backup data.
    • Each incremental backup file may take up about 10% of the size of the backup data.

You can use a dedicated removable storage device for the backup cache, for example. B. USB stick or SD card. In this case, the backup cache does not take up space on the local disk of the computer with Veeam Agent.

Determine the location and size of the cache

During the wizard caching phase, define the settings for the folder where the service files and global cache data are stored.

  • In the “Folder” field, enter the path to the folder where the service files (for source and target WAN Accelerators) and global cache data (for target WAN Accelerators) should be stored. When selecting a folder on the target WAN
  • Accelerator, make sure there is enough room to store global cache data.
  • In the Cache size field, specify the size of the global cache. The total cache size is specified for each original WAN Accelerator.
  • If you want to use a target WAN gas pedal with multiple original WAN gas pedals, each original WAN gas pedal will be allocated the specified space and the total cache size will increase proportionally.

Select the location of the local backup cache

The Cache Backup Wizard step is available if you have backup files stored in a remote location: a network share, Veeam Backup & Replication repository or cloud storage.

Specifies the settings for the backup cache:

  1. Select the Include backup cache check box.
  2. In the Location field, enter the path to the folder on the protected computer where you want the backup cache files to be stored.
  3. In the Maximum size field, enter the size of the backup cache.
    When setting the backup cache size, remember the following:

    1. Each full backup file can take up about 50% of the size of the backup data.
    2. Each incremental backup file may take about 10% of the size of the backup data.