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

Use the logman utility to identify and stop any duplicate sessions that are causing the collision. Open as an administrator.

For a user encountering this, the implications are twofold:

Use logman stop "WindowsUpdateTraceLog" -ets to force stop the conflicting session. Use the logman utility to identify and stop

logman is the command-line tool for managing ETW sessions.

Alex reran the update check:

The most direct way to resolve a name collision is to stop the existing session manually. Press Win + R , type perfmon , and hit Enter. Expand on the left sidebar. Click on Startup Event Trace Sessions . Locate WindowsUpdateTracelog in the list. Right-click it and select Stop .

If your system is otherwise stable and updates are installing successfully, many Microsoft Community Experts suggest that this specific log error can be safely ignored. logman is the command-line tool for managing ETW sessions

A stuck or broken Windows Update can leave active trace logs open indefinitely. How to Fix WindowsUpdateTracelog Error 0xc0000035