Make sure the Windows Update service is running properly.
Double-click and change its Value Data from 1 (Enabled) to 0 (Disabled).
Press Windows Key + X and select or Command Prompt (Admin) . Make sure the Windows Update service is running properly
Double-click and change its Value Data from 1 (Enabled) to 0 (Disabled). Click OK , close the Registry Editor, and reboot your PC.
A previous Windows Update session closed improperly, leaving a locked .etl (Event Trace Log) file in the system directory. Double-click and change its Value Data from 1
Here is a comprehensive guide to understanding why this happens and how to fix it permanently. What Causes Error 0xc0000035?
If third-party antivirus software or monitoring tools are hooking into the Windows Update Tracelog API, they can cause object name collisions. A clean boot helps isolate this. Press , type msconfig , and click OK . Here is a comprehensive guide to understanding why
Fixing Windows Error 0xC0000035: Session "WindowsUpdateTracelog" Failed to Start
This specific error points to a conflict within the Windows Event Tracing (ETW) system. While it rarely causes immediate system crashes, ignoring it can prevent Windows Update from properly logging its activities, making future update failures much harder to diagnose.