How to Repair MS Office “Access denied to installation source” Error Message

If you are trying to install Microsoft Office on your Windows 10 computer but Office installation fails with Access to installation source denied error message, then this article will help you find quick and easy solutions to solve this problem successfully.

If you are facing this problem, you will get the following complete error message;

Access to installation source denied

Sorry, there was a problem accessing the required file. Please check that the installation source has the correct access rights and try again.

Error code: 30015-4 (5)

What causes MS Office “Access to installation source denied” error?

The “Access to installation source denied” error is mainly caused by corrupt source files, missing DLL files and other system files, invalid or corrupt registry entries, system software, drivers and operating systems, etc. If your computer has recovered from a severe virus or malware attack, the same error may occur.

If the “Access to installation source denied” error message appears, the installation source or directory where the installation is running is to blame. Before you start troubleshooting, make sure that your system has fully installed the latest Windows update.

How to fix MS Office “Access denied to installation source” error message?

Disable proxy server

  1. Press the Windows + R keys to open the Run dialog box.
  2. Then type “ms-settings:network-proxy” in the text box and press Enter to open the Proxy tab in the Settings application.
  3. On the Proxy tab, scroll down to the Manual Proxy Setup section and uncheck the Use proxy server checkbox.
  4. Then restart your computer and repeat the action that caused the activation error to see if the problem is resolved.

Uninstalling the VPN client

  1. Open the Run dialog box by pressing Windows + R.
  2. Then type `appwiz.cpl` in the text box and press Enter to open the Programs and Features menu.
  3. When prompted for User Account Control (UAC), click Yes to grant administrator rights.
  4. In the Programs and Features window, scroll through the list of installed applications and find the third-party VPN that you suspect is causing the problem.
  5. Right-click on it and select Uninstall from the context menu.
  6. In the uninstall wizard, follow the on-screen instructions to complete the process.
  7. Once the process is complete, restart your computer and see if the problem is resolved the next time you start your system.

Frequently Asked Questions

If installing Office on your PC caused the problem, try restarting your computer and installing Office again. If that doesn't work, use this simple tool to completely uninstall Office. Once the uninstallation is complete, try reinstalling Office.

Error 0x4004f00d is usually caused by corrupt source file, missing DLL and other system files, invalid or corrupt registry entries, outdated software, drivers and operating systems, etc.

Microsoft Office 2013 error code 0x4004f00d is mainly related to corrupted Windows activation files that deal with licensing and activating the program on your computer. However, there may be other reasons for this error, such as automatic activation of Windows firewall settings.

  1. Use the task scheduler.
  2. Run the Windows Store application troubleshooter.
  3. Update Windows.
  4. Remove pesky antivirus software.
  5. Rename the Microsoft Help folder.
  6. Completely remove the Microsoft Office software from your system and reinstall it.