Fix System Restore Error 0x80070091 in Windows 10

You tried to perform System Restore function in Windows 10 but it failed with an error code 0x80070091. Now you are really frustrated and need to resolve this as it prevents you from doing other work on your system.

Since the advent of Windows 10, users are complaining of System Restore error 0x80070091 on various forums and the issue is still a pain area.

As the name suggest, System Restore brings your system back to previous settings of Windows. The feature is helpful in restoring the settings of installed programs, drivers or software, which changed due to a malware attack or Trojan etc. The System Restore feature can also retrieve your important folders and files created some time ago and that you could not find even in your Recycle Bin.

It is also a solution to Windows slowdown or other malfunctions. Owing to its benefits and often necessity to perform, occurrence of such an error can be a frustrating.

Below are the manual fixes of System Restore Error 0x80070091 in Windows 10, which you can try to resolve the issue.

Fix 1: Remove Junk Files

Ideally you should remove junk files regularly as too many junk files slowdown the computer and cause other malfunctions including System Restore error 0x80070091. You can delete temporary files, recycle bin, downloaded programs, temporary internet files, thumbnails, and old Windows folders etc. Once all the junk files are removed, try again to perform System Restore to see if the 0x80070091 error is resolved.

Steps to remove Junk files

  1. Visit menu of Windows 10 via Win + X keys
  2. Click Command Prompt (Admin)
  3. Select Yes to run command prompt as an administrator
  4. Type cleanmgr and Enter
  5. Check boxes of unnecessary files including the temporary files and click OK to remove all junk files

Fix 2: Run a disk check

The System Restore Error 0x80070091 in Windows 10 can also be due to bad sectors on your hard drive, which can be solved through the disk check.

Before performing disk check, close all the applications, save your files, and take backup of important data. This is because disk check on hard drive might lead to data loss during the process of fixing bad sectors. Thus, ensure you always have backup data stored before performing disk check, else you may require a data recovery tool after Windows 10 setup fails.

Steps to run CHKDSK in Windows 10

  1. In the Windows Search box type CMD
  2. From the options, select Run as administrator
  3. In the Command Prompt window, type: chkdsk /f /r X: drive letter for the external hard drive
  4. Press Enter, Command Prompt will now start CHKDSK and prompts you to restart the system. After rebooting, it scans and repairs the entire drive for bad sectors.
  5. When rebooting ends, run System Restore again

Fix 3: Rename WindowsApps folder in Safe Mode

For this you need to restart your computer in Safe Mode, rename the WindowsApps folder, uncheck the Safe Mode and reboot again reboot and select proper boot device.

Step-by-Step to Rename WindowsApps folder in Safe Mode

  1. Press Windows + R to open run dialog box
  2. Type msconfig and Enter
  3. In pop-up window view on Boot pane
  4. Check in on Safe Boot and click OK
  5. Click Restart, if prompted by system configuration. Windows 10 enter into Safe Mode
  6. Now again open menu via Windows + X key
  7. Click Command Prompt(Admin) to run it as administrator
  8. On prompted by User Account Control, click Yes
  9. Type the following commands and Enter to run them one by one:
  • cd C:\Program Files
  • takeown /f WindowsApps /r /d Y
  • icacls WindowsApps /grant “%USERDOMAIN%\%USERNAME%”:(F) /t
  • attrib WindowsApps -h
  • rename WindowsApps WindowsApps.old
  1. Open System Configuration Window by following above 1 to 5 steps. Now uncheck Safe boot to reboot your Windows 10.
  2. Once it finish rebooting, run System Restore again

Conclusion

The above methods can fix System Restore Error 0x80070091 in Windows 10 and also resolve other Windows 10 issues occurring to due to the error. During the process, if you end up losing your crucial data, use a professional data recovery software – Stellar Phoenix Windows Data Recovery – Home. The software can achieve complete data recovery after Windows 10 setup fails. The tool can safely and effectively recover all kinds of data lost or deleted due to formatting or rebooting of computer.

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