As long as your user account that you’re signed in as is a member of the Domain admins group this command can be run from a terminal joined to the domain.
Backup all GPOs in Domain
Open powershell and use the following command:
PS C:\> Backup-Gpo -All -Path "\\Server1\GpoBackups"Restore all GPOs in Domain
Use the “Restore-GPO” cmdlet.
PS C:\> Restore-GPO -All -Domain "contoso.com" -Path "\\Server1\Backups"Recover a specific GPO
https://docs.microsoft.com/en-us/powershell/module/grouppolicy/import-gpo?view=win10-ps
Sources:
https://docs.microsoft.com/en-us/powershell/module/grouppolicy/backup-gpo?view=win10-ps
https://docs.microsoft.com/en-us/powershell/module/grouppolicy/restore-gpo?view=win10-ps