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

Then rebuild the ETW manifest:

Use logman stop "WindowsUpdateTraceLog" -ets to force stop the conflicting session. Then rebuild the ETW manifest: Use logman stop

Unless you are actively troubleshooting a failed Windows Update with Microsoft support and need those specific trace logs, you can safely ignore this Event Viewer error or use to stop it from cluttering your administrative logs. Then rebuild the ETW manifest: Use logman stop