Windowsupdate_trace_log -

wpr.exe -start GeneralProfile -start NetworkProfile

Search the "Event Name" or "Message" column for these keywords to find the root cause: windowsupdate_trace_log

Once enabled, reproduce your error (run Windows Update). The logs will appear in: C:\Windows\WindowsUpdate.log windowsupdate_trace_log

Windows will then collect all .etl files from the trace log directory, download the necessary symbols from Microsoft's symbol server, and compile them into a static WindowsUpdate.log file on your desktop. Anatomy of a Trace Log Entry windowsupdate_trace_log

The exact time the event occurred, essential for correlating with system crashes or network drops.