Microsoftwindowswindowsupdateruximlog Failed To Start Patched Patched ✰ [TESTED]
The error message indicates a failure in the Windows Update User Experience (UX) initialization process. This usually happens when the update service or its related system files are corrupted or "stuck" while trying to apply a patch. 1. Run the Windows Update Troubleshooter
This is the fastest way to reset the update components automatically. Go to Start > Settings > System > Troubleshoot. Select Other troubleshooters. Find Windows Update and click Run. 2. Repair System Files (SFC and DISM)
If system files related to the update UI are damaged, you can repair them using the Command Prompt: Open Command Prompt as an Administrator. Type sfc /scannow and press Enter.
Once finished, type the following command to repair the Windows image:DISM /Online /Cleanup-Image /RestoreHealth. 3. Manually Restart Update Services The error message indicates a failure in the
Sometimes the "failed to start" error occurs because the background service is hung. Press Windows Key + R, type services.msc, and hit Enter. Locate Windows Update in the list. Right-click it and select Restart. Ensure the Startup type is set to Automatic. 4. Clear the Update Cache
If a patch is partially downloaded and failing to "start," clearing the cache can force a fresh start: Open Command Prompt (Admin). Stop the update service: net stop wuauserv.
Rename the software folder: ren C:\Windows\SoftwareDistribution SoftwareDistribution.old. Restart the service: net start wuauserv. Press Windows key + R , type services
Did this error occur immediately after a specific update was installed, or is it preventing you from installing a new one?
Fix Windows Update corruptions and installation failures - Microsoft Learn
1. Restart Windows Update Service
- Press
Windows key + R, typeservices.msc, and press Enter. - Scroll down and find the
Windows Updateservice. - Right-click it and select
Restartif available. If it's not running, selectStart.
If restarting the service doesn't help, proceed to the next steps. If restarting the service doesn't help, proceed to
Who was affected
- Home and business devices running Windows versions that use the modern Windows Update service and the RuximLog logging component.
- Larger impacts seen in enterprise environments with mixed update configurations or devices upgraded from older Windows releases.
5. Check for Malware
Ensure your system is free from malware, as it can cause system services to malfunction. Run a full scan with your antivirus software.
Step 6: Check for Corrupted Registry Entries
- Open the Registry Editor (Regedit.exe)
- Navigate to the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows - Look for any corrupted or suspicious entries and delete them
4. Check for Malware
Run a full scan with Windows Defender or Malwarebytes. Pay attention to any process named ruximlog.exe or similar.
Feature Name: Windows Update Component Auto-Repair & Status Diagnostics
5. Review Scheduled Tasks & Services
- Press
Win + R, typeservices.msc - Look for any non-standard service with “ruximlog” – disable if found
- Check Task Scheduler for suspicious tasks
MicrosoftWindowsWindowsUpdateRuximLog Failed to Start — Patched
Today Microsoft released a patch addressing a troubling issue where the Windows Update logging component reported a failure to start, often logged as "MicrosoftWindowsWindowsUpdateRuximLog failed to start." This post explains what happened, who was affected, how Microsoft fixed it, and what you should do now.

