Group Policy Corruption Fix: Resolving a Processing Failed Error

If Group Policy isn’t applying to a machine and you’re seeing this event log error:

The processing of Group Policy failed. Windows could not apply the registry-based policy settings for the Group Policy object LocalGPO. Group Policy settings will not be resolved until this event is resolved.

this commonly points to a corrupted local registry.pol file, which stores cached registry-based policy settings on the machine.

The Fix

1. On the affected machine, browse to C:\Windows\System32\GroupPolicy\Machine (and separately check C:\Windows\System32\GroupPolicy\User if user-side policies are also affected).
2. Rename (don’t delete outright, in case you need to roll back) registry.pol to something like registry.pol.old.
3. Run gpupdate /force from an elevated command prompt to force Group Policy to rebuild a fresh registry.pol from scratch.
4. Check the Event Viewer (System log, Group Policy source) to confirm the error has cleared on the next processing cycle.

If this recurs repeatedly on the same machine, it’s worth checking disk health and confirming the machine isn’t losing power/being force-restarted mid-policy-application, since that’s a common way this file gets corrupted in the first place.

Confirming the Fix Actually Applied

Renaming registry.pol and forcing an update is only half the job — it’s worth confirming the rebuilt file is actually being read correctly before you consider the machine fixed. Run:

gpresult /h gpresult.html

from an elevated prompt, then open the generated HTML report. It shows every GPO that applied successfully, along with any that were skipped or denied, so you can confirm the policies that were failing before are now listed under “Applied GPOs” rather than under errors or denied items. rsop.msc gives a similar live view if you prefer a GUI over the report. It’s also worth checking the Group Policy operational log specifically, rather than just the System log: Event Viewer > Applications and Services Logs > Microsoft > Windows > GroupPolicy > Operational. This log is more verbose than the System log entry that first flags the problem, and will usually show exactly which client-side extension failed to process, which is useful if the error recurs and you need to narrow down whether it’s the same cause each time or something new.

Resources

• Group Policy
• Browse our Windows Admin Toolkit picks on Amazon