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WU_E_DS_UNKNOWNSERVICE
WU_E_DS_UNKNOWNSERVICE means an operation referred to an update service that is not registered in the local data store. This is often an API or service-registration issue.
How to approach it
- Verify the service ID and registration state before attempting to remove or configure it.
- For programmatic callers, handle this as an unknown service instead of assuming the service was removed successfully.
- For managed environments, check whether policy or service registration changed between scans.
Microsoft: IUpdateServiceManager::RemoveService
Microsoft: Windows Update error reference
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