How to fix
Windows upgrade error 0x8007007f
on Windows

Hello. I tried to upgrade my PC to Windows 11 but I keep receiving the "Something went wrong. Select try again and if that doesn’t work contact Microsoft support for help. Error code 0x8007007f" message. Is there a way to fix this?

Windows upgrade error 0x8007007f is a common problem encountered by Windows users when attempting to upgrade to Windows 11. This error can be caused by a number of factors, including out-of-date or incompatible drivers,[ref en-1] software conflicts, corrupted system files, or a lack of disk space.

Drivers that are outdated or incompatible with the new version of Windows can cause the error 0x8007007f. This error can also be caused by software conflicts, in which certain applications or programs interfere with the upgrade process. Corrupted system files can also cause this error, and insufficient disk space can prevent the upgrade from succeeding.

This issue can have a significant impact on users because they will be unable to access Windows 11's new features, improvements, and security enhancements. Furthermore, it can cause frustration and waste valuable time because users may need to perform multiple troubleshooting steps to resolve the problem. In some cases, attempting to resolve the problem without proper guidance or backup can result in data loss.

Users can try updating drivers, disabling antivirus software, running system file checker (SFC), cleaning up disk space, resetting Windows update components, or performing a clean installation of Windows 11 to resolve this issue. In this guide, you will find 6 steps that should help you do this. You can also try using a system repair tool like [d1]. It can fix most system errors, BSODs,[ref en-2] corrupted files, and registry[ref en-3] issues. Otherwise, follow the step-by-step instructions below.

Solution 1. Fix Corrupted System Files

Use Command Prompt commands to repair system file corruption:

• Open Command Prompt as administrator
• Use the following command and press Enter:
  sfc /scannow

• Reboot your system
• If SFC returned an error, then use the following command lines, pressing Enter after each:
  DISM /Online /Cleanup-Image /CheckHealth
  DISM /Online /Cleanup-Image /ScanHealth
  DISM /Online /Cleanup-Image /RestoreHealth

Solution 2. Run the Installer as Administrator

• Locate the Installation assistant setup on your computer.
• Right-click on the Installation assistant setup icon.
• Select Run as administrator from the context menu that appears.

• Wait for the Installation assistant setup to launch.
• Follow the prompts to proceed with the installation.

Solution 3. Update Drivers

Outdated drivers could be the cause of the error. In this case, you can fix it automatically by using [rev id="DriverFix"], which will scan your PC for missing and out-of-date device drivers. Or you can update them manually:

• Open Settings.
• Click on Update & Security.
• Click on Windows Update.
• Click the Check for updates button.
• Click the View optional updates option.
• Click the Driver updates tab.
• Select the driver you want to update.
• Click the Download and install button.

If the View optional updates link is not available after checking for updates, then Windows Update does not have any new drivers or any updates for other products at that particular time.

Solution 4. Enable User Account Control

• Click on the Start button.
• Type control in the search box.
• Press Enter.
• Once the Control Panel opens up, click on User Accounts.
• From the right pane of the next window, select Change User Account Control settings.

• Drag the slider to Notify me only when apps try to make changes to my computer (default).
• Click OK.
• When the User Account Control (UAC) prompt appears, select Yes.
• Open the installer file.
• Click Yes when the User Account Control dialog appears.
• Run the installation.

Solution 5. Run Disk Cleanup

If you are trying to install Windows on a drive that has low disk space, the installation will fail. You must check the free space on your drive before proceeding. There should a minimum of 30 GB of space.

• Press the Windows key on your keyboard.
• Type cleanmgr in the search box.
• Press Enter.
• Select the drive (C:) and click OK on the pop-up.
• On the next window, click on Clean up system files.
• Again, choose drive (C:).
• Click on OK.
• When the Disk Cleanup for (C:) window appears, check all the options in the Files to delete section.

• Click OK.
• Confirm by selecting Delete files.
• Now start installing freshly and the issue will no longer occur.

Solution 6. Uninstall Third-Party Security Software

A third-party antivirus program may be the reason why Windows 11 installation fails. Sometimes security software mistakenly blocks safe downloads.

• Go to Apps & Features.
• Find the security program, click on it, and choose Uninstall.