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How to Fix Windows 11 Error Code 0x8007007f?

Here's the step-by-step guide on how to fix Windows 11 installation error code 0x8007007f.

Windows 11 is finally available to everyone now and it can be installed easily through Microsoft’s Update Assistant, ISO files, or even via Windows Update. But there are many users who are getting Windows 11 error codes, typically displaying around 71% during the installation process. In this guide, I will tell you how to fix error code 0x8007007f in Windows 11, follow the steps given below.

How to fix Error Code 0x8007007f during Windows 11 Installation?

How To Fix Windows 11 Error Code 0x8007007f

The error code 0x8007007f shown during the Windows 11 setup phase usually appears with the Update Assistant tools or the Media Creation Tool. The reasons are unclear; some users link the error to UAC (User Account Control permissions, others to outdated GPU drivers. In any case, check out the solution given below to fix Windows 11 Installation error 0x8007007f.

  1. You might probably don’t have admin rights to run Windows 11 Installation Assistant. So, try to run the Update Assistant as an administrator that will help you to fix the error.
  2. Try to disable or uninstall any third-party antivirus software that might be blocking the upgrade process.
  3. Check that you have enough hard drive space. Not having enough storage space might also result in this error code.
  4. Check your Graphics Card drivers are up-to-date with the latest update. An outdated GPU driver may also cause this problem.
  5. Another solution is to run an SFC scan or Deployment Image Servicing and Management (DISM) scan to check if there are no corrupted or damaged system files.

Here’s how to perform an SFC Scan & DISM Scan:

  1. You need to first of all open CMD with admin rights. To do that go to Search > Type CMD and Run it as administrator.
  2. Once the CMD opens, just type the below command and then press Enter key:
    sfc /scannow
  1. After the SFC scan process is finished, enter the DISM scan command given below in CMD:
    Dism /Online /Cleanup-Image /RestoreHealth
  1. Once the scan is completed, try to launch the Windows 11 Update Assistant again with admin rights and check if the error is fixed.

That is all you need to know to fix Windows 11 installation error code 0x8007007f. Also, check out our other Windows 11 Guides to enable and disable Dynamic Refresh Rate in Windows 11, or how to use System Restore in Windows 11, etc.