Session Windowsupdatetracelog Failed To Start With The Following Error 0xc0000035 Repack Portable

If you used a "debloat" script after installation, it may have partially disabled the Tracelog service. Re-enabling Windows Update telemetry usually resolves this. 💡 Key Takeaway

. Microsoft support documentation and community experts often classify this as a "benign" error. If your Windows Updates are installing correctly and your system performance is stable, you can safely ignore these log entries. learn.microsoft.com However, if your updates

: This specific hexadecimal NTSTATUS code means an object name collision has occurred. Windows is trying to launch a service thread under a name that another thread is already using. If you used a "debloat" script after installation,

To troubleshoot and resolve the "Session Windows Update Trace Log failed to start with the following error: 0xc0000035" issue, follow these steps:

How to Fix "Session WindowsUpdateTraceLog failed to start with the following error 0xc0000035" Windows is trying to launch a service thread

The WindowsUpdate_trace_log is an ETW session that should normally start and stop seamlessly in the background. When Windows Update attempts to initialize this trace session but fails, Event Viewer logs the 0xC0000035 warning. This error can be accompanied by other failed session logs, such as:

To put it in universal language: Windows is trying to launch a background diagnostic logging session (in this case, for tracking Windows Update data). However, another process or a leftover temporary file with the exact same name is already running or occupies that specific memory space. Because two objects cannot hold the exact same name or identity simultaneously in the kernel, the operation collides and fails to start. Why the "Repack" Context Matters but as this guide shows

To resolve this issue, follow these steps in order.

, causing a conflict when Windows tries to launch a new instance of the WindowsUpdateTracelog

Navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger\WindowsUpdateTracelog Find the DWORD value named . Double-click it and change the value from 1 to 0 .

Encountering the Session "WindowsUpdate_trace_log" failed to start with the following error: 0xC0000035 message can be alarming, but as this guide shows, it's a problem that is almost always solvable. In many cases, it can be resolved with a simple system reboot or by running the Windows Update troubleshooter. For more persistent issues, targeted fixes like clearing the SoftwareDistribution folder or editing the registry are highly effective.