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WU_E_IDLESHUTDOWN_OPCOUNT_SERVICEREGISTRATION
WU_E_IDLESHUTDOWN_OPCOUNT_SERVICEREGISTRATION indicates that registration or unregistration of an update service was still in progress during the agent idle-shutdown path.
What to check
- Do not change the update-service registration while a scan or install is in flight.
- If management software registers a private service or scan package, wait for that call to finish before releasing WUA objects.
- Use the surrounding log entries to identify the service ID and the operation that overlapped shutdown.
Microsoft: IUpdateServiceManager interface
Microsoft: Windows Update log files
Microsoft: Windows Update error reference
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