System Restore Error 0x80070091 on Windows 10

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Windows 10

A lot Windows 10 users reported that system restore did not complete successfully. And the problem pop-uped as Error 0x80070091 shown as image above. It’s a good thing that Microsoft has noticed this error and will update this thread soon. However, if you are Windows 10 Advanced user, you can fix it right now via the methods below. If you’ve faced it, just go with the easy fixes below.

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Fix One. Rename the WindowsApps folder in Safe Mode

1)
Boot your Windows 10 into safe mode:
How to:
a)
Open run dialog box by pressing Windows key + key together.
Then type msconfig in the box and hit Enter.

Windows 10

b)
On the pop-up window, view on Boot pane.
Then tick on Safe boot and click OK.
Click Restart, if prompted by system configuration

Windows 10

Then your Windows 10 would get into safe mode.

2)
Open quick-access menu by pressing Windows key + key.
Then click Command Prompt(Admin) to run it as administrator.
When prompted by User Account Control, click Yes.

Windows 10

3)
Type the following commands and hit 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

4)
Follows the a) & b) of Step 1 to open System Configuration Window.
This time uncheck Safe boot to reboot your Windows 10.

Windows 10

5)
When it finish rebooting, run System Restore again.

Fix Two. Rename the WindowsApps folder in WinRE

1)
Boot your Windows 10 into WinRE(Windows Recovery Environment)
How to:
a)
Open Settings Window by pressing Windows key + key.
Then click Update & security.

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Windows 10

b)
Click Recovery.
Then scroll down on the right side and click Restart now under Advanced startup.

Windows 10

c)
Click Troubleshoot Advanced > Command Prompt

Windows 10

2)
Type the following commands and hit Enter to run them one by one:
• cd C:Program Files
• attrib WindowsApps -h
• rename WindowsApps WindowsApps.old

3) 
Reboot your Windows 10, then run System Restore again.

That’s it!

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