Windows 10: Fixing System Restore Error 0x80070091


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


  • Boot into Safe mode.
  • Open Command Prompt as Administrator and type in the following commands followed by Enter Keys:

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

  • Reboot.
  • Now recheck the issue.

System Restore Bug in Windows Technical Preview Build 9841

I tried a System Restore today on Windows Technical Preview. Once  the operation completed  it gave me the following message: –

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

Details: An unspecified error occurred during System Restore.  (0x800700b7).”

The system restarted and it gave me  this message:

“System Restore completed successfully. The system has been restored to 07-10-2014…..”
I couldn’t find the undo System Restore option.

WP_20141009_002[1] WP_20141009_003[1]