How to Solve Kaspersky Antivirus Error 27300 on Windows Computer

When we think of the best third-party antivirus program, Kaspersky is the first name that comes to mind. Although it is a well-known antivirus program, it has some technical bugs.

Kaspersky antivirus error 27300 is one of the most common errors encountered by many users around the world. Most often this error occurs when the “klim6.sys_x86” or “klim6.sys_x64” driver is installed into the system. This error can affect the security of personal data. Sometimes it also limits the use of other applications.

If you too have encountered this error and don’t know how to fix it, this article can help you a lot. In this article, you will learn some of the easiest methods to help you fix this error.

What causes Kaspersky Anti-Virus error 27300?


WU dependencies are in a “limbo” state: In some cases, affected users reported that this problem occurred in their case because the WU dependency is stuck in a “limbo” state.

Outdated Windows 10: If this problem occurs on Windows 10, the error may occur because the operating system is missing an important infrastructure update that the antivirus package needs.

Already installed incompatible application: One of the most common causes of this error code is an incompatible application already installed on the system.

Network Configuration Service is disabled: The Network Configuration Service is a critical dependency that the Kaspersky Anti-Virus installer needs to install the product.

Registry parameter “Config” is incorrectly configured for Windows 7 or Windows 8.1: If this error occurs on an older version of Windows, the installation will most likely fail due to incorrectly configured network registry keys.

How to repair the Kaspersky Antivirus 27300 error?


Uninstall conflicting antivirus applications

  1. Press Ctrl+R on your keyboard to open the launch window.
  2. Type “Appwiz.CPL” and press Enter.
  3. Find the incompatible antivirus program you want to remove.
  4. Right-click on it and select Uninstall. You can also click the Uninstall button at the top of the list.
  5. Follow the instructions on the screen and complete the uninstallation of the product.
  6. If prompted, restart your computer.
  7. After restarting your computer, try installing Kaspersky AV again.

Update Windows 10 installation

  1. Open Windows settings by pressing Windows + I.
  2. Click Updates and security.
  3. Click Check for updates.
  4. Allow the updater to check for updates and install them.
  5. Once all updates are installed, you can try to install the Kaspersky AV tool.

Disable verification of driver digital signatures

  1. Select the Start menu, then press Power.
  2. While holding down the Shift key, click Restart.
  3. Wait for the reboot until the extended boot menu appears.
  4. Press 7 or F7 when prompted for boot mode.
  5. Your system will boot with digital signature verification disabled.
  6. Now try to install the Kaspersky AV tool.
  7. When the installation is finished, you can reboot the system and the driver signature
  8. verification will be automatically enabled again.

Rename the catroot2 folder

  1. Restart the computer holding the Shift key, as described above.
  2. Enter CMD or Power Shell as administrator. (To do this, find CMD on the Start menu, right-click CMD, and then right-click Run as administrator.
  3. Enter the following commands in sequence:
    net stop cryptsvc
    ren %systemroot%\system32\catroot2 catroot2_old
    net start cryptsvc
  4. Finally, reboot your computer.

Frequently Asked Questions

  1. Create a restore point.
  2. Make sure that you have an activation code for your Kaspersky program.
  3. Delete files from previously installed versions of the product.

If your computer is running under Microsoft Windows, run the setup wizard executable file with an administrator account. This error occurs when Kaspersky Lab anti-virus software is installed on your computer. Delete the incompatible software from your computer and start the installation wizard again.

If the Kaspersky application is no longer installed on your computer after upgrading to Windows 10, it means that the application version was incompatible. To reinstall the application, follow these steps: Download third-party tool for Kaspersky apps removal. Uninstall all remaining product files using this third-party tool.