The information in this article applies specifically to issues reported around the early months of 2026.
If the Scheduled Task looks fine, the actual file the task is trying to launch might be corrupted. You can use Windows' built-in tools to repair them.
If you still experience actual update failures after all these steps, the next step would be to consider an using the Microsoft Media Creation Tool, which can repair the entire Windows installation without deleting your personal files.
This is the most frequent fix. The task triggering ruximlog often gets stuck in a "queued" or disabled state. microsoft.windows.windowsupdate.ruximlog failed to start
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.
Are you seeing any alongside this error?
A: No. Renaming SoftwareDistribution and Catroot2 only deletes the update history and temporary files. Your documents, photos, and settings remain untouched. The information in this article applies specifically to
Deleting files in the RUXIM directory can permanently break Windows Update and lead to missing security fixes. Microsoft Support Are you seeing this error as part of a Blue Screen or is it just appearing in your Event Viewer RUXIM.EXE - Wilders Security Forums
If you aren't experiencing other performance issues, this error can often be safely ignored. However, if you want to clear it, try these steps: Microsoft Learn Reset the AutoLogger Registry Entry: Windows + R , and hit Enter. Navigate to:
Session "Microsoft.Windows.WindowsUpdate.RUXIMLog" failed to start with the following error: 0xC0000035 If you still experience actual update failures after
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 .
If ruximhost.exe or its associated system files are corrupted, Windows built-in deployment tools can repair them automatically. Open .
impact the actual installation of security updates or the stability of your PC. Common Solutions and Mitigations
Navigate to C:\Windows\SoftwareDistribution\Download and delete all contents. Restart the Windows Update service.
If your computer updates normally and you aren't experiencing slow startup times, this error is generally benign and can be ignored . However, if you are experiencing Windows Update failures or want to clear your logs, it should be addressed. Common Causes for the RUXIMLog Error