Session Windowsupdatetracelog Failed To Start With The Following Error 0xc0000035 Repack May 2026
Troubleshooting Session Windows Update Trace Log Failed to Start: Error 0xc0000035
The Windows Update Trace Log is a valuable tool for system administrators and power users to diagnose and troubleshoot issues related to Windows updates. However, sometimes this log may fail to start, hindering the troubleshooting process. One such error that users may encounter is "Session Windows Update Trace Log failed to start with the following error: 0xc0000035." In this article, we will explore the possible causes of this error and provide step-by-step solutions to resolve the issue, specifically focusing on the "repack" aspect.
Understanding the Error Code 0xc0000035
The error code 0xc0000035 is a Windows error code that typically indicates a problem with the Windows registry or a failure to access a required system resource. In the context of the Windows Update Trace Log, this error may occur due to corrupted system files, registry entries, or issues with the Windows Update service.
Causes of the Error
Based on user reports and Microsoft support forums, the following are some possible causes of the error:
- Corrupted system files: Corrupted or missing system files required by the Windows Update service can cause the error.
- Registry issues: Malformed or incorrect registry entries can prevent the Windows Update Trace Log from starting.
- Windows Update service issues: Problems with the Windows Update service, such as incorrect configuration or failure to start, can lead to the error.
- Incompatible or outdated drivers: Incompatible or outdated drivers can cause system instability, leading to the error.
Repack and Its Relation to the Error
The term "repack" refers to a repackaged version of a software or driver, often modified to bypass certain restrictions or requirements. In some cases, repackaged software or drivers may cause system instability or compatibility issues, leading to errors like 0xc0000035.
If you have installed a repackaged version of Windows or a software component, it may be contributing to the error. To resolve the issue, you may need to: Troubleshooting Session Windows Update Trace Log Failed to
- Uninstall the repackaged software or driver
- Reinstall the original software or driver
- Perform a System File Checker (SFC) scan to repair corrupted system files
Solutions to Resolve the Error
To troubleshoot and resolve the "Session Windows Update Trace Log failed to start with the following error: 0xc0000035" issue, follow these steps:
C. Service Startup Race Condition
If you are repackaging an OS image (sysprep/capture), the wuauserv (Windows Update) service is likely starting up during the boot process of the reference machine. If the capture process begins while Windows Update is initializing its logging, the collision occurs.
The Problem
You are checking the Event Viewer (Applications and Services Logs > Microsoft > Windows > WindowsUpdateClient > Operational) or running a system scan, and you see this error: Corrupted system files : Corrupted or missing system
Session "WindowsUpdateTraceLog" failed to start with the following error 0xc0000035
This error indicates that the Event Tracing for Windows (ETW) session for Windows Update cannot start. Code 0xc0000035 translates to STATUS_OBJECT_NAME_COLLISION — meaning a session with that name already exists (orphaned or stuck).
Summary
The error "Session WindowsUpdateTraceLog failed to start with the following error 0xc0000035" indicates a Windows scheduled task or service (related to Windows Update tracing) could not start because an object with the same name already exists (STATUS_OBJECT_NAME_COLLISION). This typically points to a corrupted or duplicate trace session, leftover ETW (Event Tracing for Windows) registration, or conflicting tracing state.