Ali Gunes

Ali Ihsan Gunes

Apr 8, 2025 • 4 min read

How to Fix 0x8007007f Error in Windows 11

Trying to upgrade to Windows 11 and hit the 0x8007007f error? Here's a step-by-step guide to fix it quickly and safely.

What Causes the 0x8007007f Error?

This error commonly occurs when running the Windows 11 Installation Assistant without administrator privileges or when system files are corrupted.

0x8007007f error screen Windows 11 0x8007007f error screen

Step-by-Step Fix for 0x8007007f

1. Open Command Prompt as Administrator

  1. Type cmd into the Start Menu search bar.
  2. Right-click on Command Prompt.
  3. Select Run as administrator.

2. Run an SFC Scan to Repair System Files

In the command window, type the following command and press Enter:

sfc /scannow

This will scan and repair any corrupted system files. It may take several minutes to complete.

Running SFC scan Running SFC scan

3. Run Windows 11 Installation Assistant as Administrator

  1. Right-click on the Installation Assistant executable file.
  2. Select Run as administrator.
  3. Restart the upgrade process.
Running Windows 11 Assistant with admin rights Running Windows 11 Assistant with admin rights

Additional Tips

Conclusion

The 0x8007007f error is a common issue when upgrading to Windows 11, but it’s usually easy to fix by following these steps. If the problem persists, check your hardware compatibility or perform additional system updates.