Do not change permissions on the parent config folder—this can break system boot.
Open and run:
$Action = New-ScheduledTaskAction -Execute "%windir%\system32\reg.exe" -Argument "save HKLM\SYSTEM %windir%\system32\config\RegBack\SYSTEM /y" $Trigger = New-ScheduledTaskTrigger -Daily -At 2:00AM Register-ScheduledTask -TaskName "RegIdleBackupManual" -Action $Action -Trigger $Trigger -User "SYSTEM" regback copy not working