What is SVC-FAIL-wuauserv?
System Service Crash: Windows Update ranks as a medium-severity Windows operating system issue in our database. The wuauserv service terminated unexpectedly. Services dependent on this process may not work. It's most often caused by blocked by antivirus and missing permission. Use the steps below to track down and fix the cause.
Common Causes
- Corrupt service registry keys
- Blocked by antivirus
- Missing permission
Step-by-Step Fix Guide
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1
Restart the service via services.msc
Most reports of SVC-FAIL-wuauserv clear up after Restart the service via services.msc, so it's worth trying before anything more involved.
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2
Fix service permissions
Repeat occurrences typically trace back to less obvious windows instability factors, addressed in the steps ahead.
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3
Restore system files
For lingering SVC-FAIL-wuauserv cases, "Restore system files" is worth running through.
Commands & Diagnostics
sc query wuauserv
net start wuauserv
Frequently Asked Questions
In most cases, corrupt service registry keys is behind SVC-FAIL-wuauserv. Blocked by antivirus and missing permission can trigger it too.
Most SVC-FAIL-wuauserv reports resolve after "Restart the service via services.msc". The rest of the guide above is there for the cases that don't.
SVC-FAIL-wuauserv is a medium-severity issue. It can affect system stability, but the fix steps above typically resolve it without lasting damage.
You shouldn't need to. Work through the guide above first — a reinstall is only worth considering if none of those steps help.
Sometimes. Microsoft regularly releases patches that fix known BSOD triggers including SVC-FAIL-wuauserv. Make sure Windows is fully up to date via Settings → Windows Update before attempting more advanced fixes.
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