Group Policy Stop Windows Update From Auto Downloading and Installing Updates

 gpedit

Computer Configuration > Administrative Templates > Windows Components > Windows Update > Manage end user experience

Group Policy Edits

Updates Offered But Not Auto Installed

Press Win + R, type gpedit.msc, and press Enter. 

Navigate to: Computer Configuration > Administrative Templates > Windows Components > Windows Update > Manage end user experience

Double-click Configure Automatic Updates. 

Select Enabled.

In the Options dropdown, select 2 - Notify for download and notify for install (or Notify for download and auto install depending on your OS version).

Click Apply and OK, then restart your computer. 

Reset Group Policy

Reset polices on the computer:

Open command prompt as administrator and run one at a time.

reg delete "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKCU\Software\Microsoft\WindowsSelfHost" /f

reg delete "HKCU\Software\Policies" /f

reg delete "HKLM\Software\Microsoft\Policies" /f

reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKLM\Software\Microsoft\Windows\CurrentVersion\WindowsStore\WindowsUpdate" /f

reg delete "HKLM\Software\Microsoft\WindowsSelfHost" /f

reg delete "HKLM\Software\Policies" /f

reg delete "HKLM\Software\WOW6432Node\Microsoft\Policies" /f

reg delete "HKLM\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Policies" /f

reg delete "HKLM\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\WindowsStore\WindowsUpdate" /f

Reset Group Policy Settings to Default with Command Prompt

Open Command Prompt window as administrator and run following commands:

RD /S /Q "%WinDir%\System32\GroupPolicy"

RD /S /Q "%WinDir%\System32\GroupPolicyUsers" 

Reset Group Policy To Default

1. Open command prompt with admin permission

2. Execute these commands then restart the computer

RD /S /Q "%WinDir%\System32\GroupPolicy"

RD /S /Q "%WinDir%\System32\GroupPolicyUsers"

gpupdate.exe /force 

Group Policy Editor Added To Windows 10 Home

I bought a new laptop awhile back that came with Windows 10 Home.  I don't use Group Policy Editor all that often but I do occasionally. It was irritating not to have it. I read about adding it but results seemed mixed. The following site said they had nailed the process and it worked flawlessly for me.

https://www.itechtics.com/easily-enable-group-policy-editor-gpedit-msc-in-windows-10-home-edition/

This may be a better option 

https://github.com/Fleex255/PolicyPlus