I found it. Three months ago, a specific Cumulative Update (KB501XXXX—let’s just call it "The Patch") had attempted to install. The logs were messy, filled with HRESULT 0x80070002 (File not found) errors.
your computer. This fix is often cited on Microsoft Learn as a way to stop the specific startup error. 🔍 Understanding the Error microsoftwindowswindowsupdateruximlog failed to start full
This built-in tool can resolve issues where services failed to start. I found it
In most cases, this error is and can be ignored if your system is otherwise stable and receiving updates. Problem Overview Source: Microsoft-Windows-Kernel-EventTracing . I found it. Three months ago
%SystemRoot%\system32\svchost.exe -k netsvcs -p