Fix: Win 10 System Restore Fail 0x80070091

This post will tell you how to fix System Restore Fail 0x80070091 in Windows 10.
Many Windows 10 users have reported that they faced System Restore Fail 0x80070091 while tried SysRes from two points, both with same failure.



System Restore did not complete successfully. Your computer's system files and
settings were not changed.

Details:
System Restore failed while restoring the directory from the restore point.
Source: AppxStaging
Destination: %ProgramFiles%\WindowsApps
An unspecified error occurred during System Restore. (0x80070091)

In order to fix Win 10 System Restore Fail 0x80070091, you just folder WindowsApps, reboot the system and try a system restore should cure the problem. To do that, follows the steps:

Step 1. Press Windows key + X and click Command prompt (Admin), and confirm UAC
Step 2. In the PowerShell command prompt PS C:\WINDOWS\system32> is visible, type the commands below.

• cd C:\Program Files
  takeown /f WindowsApps /r /d Y
  icacls WindowsApps /grant “%USERDOMAIN%\%USERNAME%”:(F) /t          
  attrib WindowsApps -h
  rename WindowsApps WindowsApps.old
  

Step 3. Close Command Prompt and reboot back into Windows 10.

Now you can try run System Restore and check if System Restore error 0x80070091 has fixed.
See more following video for illustration of this post:


That’s it. Hope this helps you.