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

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Third-party security suites sometimes lock ETW sessions, causing Windows to retry and fail. Step-by-Step Solutions to Fix Error 0xc0000035 Right-click the key in the left folder tree

Disconnect non-essential USB devices and external drives before installing Windows Updates.

If the error stems from corrupted system files or broken registry pointers tied to the Event Tracing for Windows (ETW) subsystem, built-in repair tools can deploy clean replacements. Open . If the error stems from corrupted system files

Understanding the root cause helps in applying the right fix. The error is typically triggered by one of the following:

If you’re an advanced user or IT administrator, you can use these diagnostic commands to inspect and clean up problematic Event Tracing for Windows (ETW) sessions. The error is typically triggered by one of

Stop the core update services by running these commands one by one:

When the error coincides with actual Windows Update failures, troubleshooting becomes necessary.

After it finishes, run: DISM /Online /Cleanup-Image /RestoreHealth . 3. Clear the Update Cache