Session Windowsupdatetracelog Failed To Start With The Following Error 0xc0000035 -

Corrupted files in the update folder may cause persistent logging errors. Microsoft Learn Stop the Windows Update service: net stop wuauserv Navigate to C:\Windows\SoftwareDistribution and delete all files and folders inside. Restart the service: net start wuauserv Microsoft Learn Is this error critical?

Clean ETW/Registry leftovers (advanced; back up registry first) Corrupted files in the update folder may cause

After some research, I found that error translates to ERROR_ALREADY_EXISTS — meaning the trace session is already running or another process has a conflicting handle. Corrupted files in the update folder may cause

Check for the presence of the WindowsUpdateTraceLog key. Corrupted files in the update folder may cause

it. Windows will reinstall a fresh version if needed during the next update cycle. Microsoft Learn 5. Repair System Files