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

A: This indicates a persistent scheduler or task is trying to start the trace session twice. Run schtasks.exe and look for any custom update-related tasks. Also, check for remnants of older Windows Update agents in C:\ProgramData\Microsoft\Diagnosis\ETLLogs . Conclusion The error "Session WindowsUpdateTraceLog failed to start with the following error 0xc0000035" is fundamentally a communication breakdown within Windows' own logging infrastructure. While the cryptic error code suggests a deep registry failure, the reality is far more manageable.

You must have Administrator privileges . Log in as an administrator or right-click Command Prompt/PowerShell > "Run as administrator." Method 1: Using Logman (The Official ETW Controller) logman is a built-in Windows command-line tool designed to manage ETW sessions. This is the most surgical and effective method. A: This indicates a persistent scheduler or task

If the problem persists after following all three methods in this guide, the issue may be a corrupted Windows Imaging Component (WIC) or a failing storage drive. At that point, running an (installing Windows from a USB drive while keeping apps and data) is the recommended final step before a clean installation. Log in as an administrator or right-click Command

A: No. If you ignore it, Windows Update will remain in a degraded state. You won't receive security patches, leaving your system vulnerable. You won't receive security patches

Remember: In Windows, 0xc0000035 isn't a death sentence—it's just a collision. Clear the road, and updates will flow again.