With The Following Error 0xc0000035 [2021] — Session Windowsupdatetracelog Failed To Start

Press Windows Key + S , type , right-click Command Prompt , and select Run as administrator .

If this trace session fails to start, Windows Update will frequently stall or fail silently because the logging subsystem is unable to record events.

Note: Disabling the tracer via 0 stops the diagnostic collision. Windows Update will still function normally and will automatically recreate or restart clean tracking logs when required. Step 3: Run SFC and DISM Repairs Press Windows Key + S , type ,

Open and run:

New log files will be regenerated automatically when Windows Update runs. Windows Update will still function normally and will

The Windows Management Instrumentation repository contains data that controls these traces; if corrupted, it causes naming collisions.

Click , close the Registry Editor, and restart your computer . Click , close the Registry Editor, and restart your computer

Essentially, Windows is trying to launch the WindowsUpdateTraceLog session, but it thinks the session is already running or the file associated with it is locked. It sees a "collision," so it aborts the process.