Event Viewer logs showing "UXIMLog failed to start" or "Log file full". Inability to install the latest Cumulative Updates.
and check for the error.
to allow Windows to create a fresh log file. Method 2: Reset Windows Update Components microsoftwindowswindowsupdateruximlog failed to start full
Ensure the is set to Automatic. If you'd like to dive deeper, let me know: Are you on Windows 10 or 11 ? Did this happen after installing a specific app ? Does the error pop up during a clean boot ? Share public link
It started with a ticket escalated from Tier 1 support. A simple, almost innocent entry in the System Event Log, logged under the source Service Control Manager . Event Viewer logs showing "UXIMLog failed to start"
Select (or Apps & Features depending on your Windows version). Locate Microsoft Update Health Tools using the search box. Click on it and select Uninstall .
Open Settings → Apps → Installed apps (Windows 11) or Apps & features (Windows 10). to allow Windows to create a fresh log file
Some users have found that uninstalling the component resolves the RUXIMLog error. This tool, when present, may interfere with the standard update diagnostic processes.
In rare cases, system instability due to aggressive RAM overclocking (including XMP profiles), CPU undervolting, or outdated BIOS firmware has been cited as a contributing factor to this and other kernel-level errors.
This error typically does prevent Windows Update from installing security patches or feature updates. It’s more of an annoyance than a system threat.
Sometimes the "UX" failure is caused by a conflict with your GPU drivers. Ensure your are up to date.