To Start — Microsoft.windows.windowsupdate.ruximlog Failed
The error "microsoft.windows.windowsupdate.ruximlog failed to start" is a classic case of a third-party component masquerading as a legitimate Windows process. Do not panic, but do not ignore it.
By removing the rogue service entry from the Windows Registry and scanning for malware, you will resolve the error in under ten minutes. If the problem persists, resetting the Windows Update components or performing an in-place upgrade will restore your system to full health.
Remember: When Windows Update acts up, always question any component that Microsoft does not officially document. Keep your system clean, use built-in tools first, and you will keep your PC running smoothly for years to come.
The "Microsoft.Windows.WindowsUpdate.RUXIMLog" failed to start error, often accompanied by code 0xC0000035, indicates a non-critical background logging conflict within the Reusable User Experience Interaction Manager component. Resolving this issue typically involves running DISM/SFC scans, resetting Windows Update services, or addressing driver conflicts. For detailed troubleshooting steps from Microsoft, visit Microsoft Support.
Since last windows update at start of June i have had constant crashes The bugcheck was: 0x00000116 - Microsoft Q&A
The error message "Session 'Microsoft.Windows.WindowsUpdate.RUXIMLog' failed to start"
is a common Event Viewer entry, often accompanied by error code 0xC0000035
typically stems from a conflict within Windows Update logging components introduced by specific updates like Microsoft Learn What is RUXIM? Reusable UX Integration Manager
) is a Windows 10 component used by Windows Update to manage user interface elements and scan the system. The session is responsible for generating log files to track these activities. Microsoft Learn Why It Fails (Error 0xC0000035) In many cases, the error code 0xC0000035 STATUS_OBJECT_NAME_COLLISION
, meaning the system tried to create a log file or object that already exists. Community reports also suggest the following causes: Microsoft Learn Update Conflicts: Specifically linked to the installation of microsoft.windows.windowsupdate.ruximlog failed to start
, which reportedly replaced older remediation services but may have lacked necessary logging executables in certain update packages. Corrupted Files:
General system file corruption can prevent the session from initializing correctly. Microsoft Learn Recommended Fixes
If your system is running smoothly otherwise, this error can often be safely ignored
as it rarely impacts actual update downloads. However, if you want to clear it, try these steps: Microsoft Learn Run System Repairs:
Use the Command Prompt as Administrator to fix potential file corruption: DISM /Online /Cleanup-Image /RestoreHealth sfc /scannow Clear Windows Update Cache: Stop the update service, delete files in C:\Windows\SoftwareDistribution , and restart the service. Registry Modification:
Some users resolve this by deleting the specific log entry in the registry: Navigate to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI\Autologger Delete the Microsoft.Windows.WindowsUpdate.RUXIMLog key and restart. Uninstall Health Tools: If present, uninstalling Microsoft Update Health Tools Settings > Apps and restarting has resolved the conflict for some. Microsoft Learn For official troubleshooting, you can also use the Windows Update Troubleshooter provided by Microsoft Support. Microsoft Support Are you seeing any secondary symptoms
like failed updates or slow performance, or just the log error? Startup Error in Event Viewer - Microsoft Q&A
The error "Session 'Microsoft.Windows.WindowsUpdate.RUXIMLog' failed to start" (often accompanied by error code 0xC0000035) is a common Event Viewer entry. It typically occurs when the Reusable UX Integration Manager (RUXIM) data collector tries to start while another instance or a conflicting kernel session is already active. The error "microsoft
In most cases, this error is a benign warning that does not cause system crashes or prevent Windows from functioning normally, though it is frequently found alongside other update-related issues. Common Causes
Session Conflict: An existing instance of the RUXIM session is already running, preventing a new one from starting.
Kernel Logger Conflicts: Errors with the "NT Kernel Logger" or "Microsoft.Windows.Remediation" often appear simultaneously.
Corrupted Update Files: Damaged files in the Windows Update cache can trigger logging failures.
Hardware Conflicts (Rare): In some scenarios, hardware issues like faulty RAM have been linked to broader Event Viewer errors, though this is less specific to RUXIMLog. Recommended Solutions
Run System Repairs: Use standard Windows repair tools to fix corrupted system files that might be interfering with logging services. Open Command Prompt as Administrator. Run sfc /scannow. Follow with DISM /Online /Cleanup-Image /RestoreHealth.
Clear the Windows Update Cache: Forcing Windows to rebuild the update folder often resolves logging errors. Stop the Windows Update service in services.msc.
Navigate to C:\Windows\SoftwareDistribution\Download and delete all contents. Restart the Windows Update service.
Run the Windows Update Troubleshooter: This built-in tool can automatically reset necessary components. Once you’ve fixed the error, follow these best practices:
Go to Settings > Update & Security > Troubleshoot > Additional troubleshooters and select Windows Update.
Ignore if Stable: If your PC is not experiencing crashes or "Blue Screen of Death" (BSOD) errors, Microsoft support documents and community experts often suggest ignoring this specific log entry, as it is frequently a reporting glitch rather than a critical failure.
Are you seeing this error alongside specific system crashes or failed updates, or is it just appearing in your Event Viewer?
Once you’ve fixed the error, follow these best practices:
There are three primary reasons why this error occurs:
Use these details to search for targeted fixes (e.g., missing DLLs, permission issues, or failing scheduled tasks).
Given the suspicious nature of "ruximlog," a thorough security scan is essential.
Before diving into advanced fixes, perform these quick checks:
If the error persists, proceed with the solutions below.