Session Windowsupdatetracelog Failed To Start With The Following Error 0xc0000035 !!install!! May 2026
Fix: Session "WindowsUpdateTracelog" failed to start with error 0xc0000035
You will see a list of Data Collector Sets. Look for any entry named WindowsUpdateTraceLog. It may appear under "Sessions." Windows 10/11: Go to Settings > System >
The Chain Reaction
When this collision happens:
- Windows 10/11: Go to Settings > System > Troubleshoot > Other troubleshooters.
- Select Windows Update > Run.
- Follow the prompts. If it finds “Windows Update components must be repaired” or “Service registration is missing or corrupt,” allow it to fix.
- Reboot and retry updates.
The error 0xC0000035 is a "Status Object Name Collision". It typically means the Windows Update Trace Logger tried to start, but a session with that same name was already running. Is this serious? In most cases, no. The error 0xC0000035 is a "Status Object Name Collision"
The error code 0xc0000035 is a Windows error code that indicates a STATUS_ACCESS_DENIED exception. This means that the Windows Update service is unable to access a required resource or registry key, preventing it from starting the WindowsUpdateTrackLog session. The WindowsUpdateTrackLog session is responsible for tracking and logging Windows updates, which is essential for troubleshooting and debugging purposes. Windows 10/11: Go to Settings >
Method 4: Run the Windows Update Troubleshooter
Microsoft includes a built-in troubleshooter that can diagnose and fix ETW session failures.