First step for 2, If you can not open the Group Policy, you need to make 1 step.
1. Restore Group Policy
New text document on the desktop, paste the code.
@echo off
pushd "%~dp0"
dir /b C:\Windows\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientExtensions-Package~3*.mum >List.txt
dir /b C:\Windows\servicing\Packages\Microsoft-Windows-GroupPolicy-ClientTools-Package~3*.mum >>List.txt
for /f %%i in ('findstr /i . List.txt 2^>nul') do dism /online /norestart /add-package:"C:\Windows\servicing\Packages\%%i"
pause
File -> Save As ".bat" file format, file type, select "All Files"
Run as administrator file
2. reset the user account
Win + R key to open the "Run", type "gpedit.msc" Enter open Group Policy.
In the above figure, double-click the "User Account Control: Run all administrators in Admin Approval Mode", select "Disabled"
When prompted to restart the computer to take effect.