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WU_E_REPORTER_UNEXPECTED
WU_E_REPORTER_UNEXPECTED is the reporter component's generic error when no more specific reporting code applies. It should be treated as a pointer to the preceding log records rather than as the root cause.
What to check
- Find the first warning or HRESULT before this one, especially XML, cache, upload, service, or authentication messages.
- Compare a healthy device using the same update service to see whether the error is device-specific.
- Confirm whether the update installation result is actually affected before retrying installations.
Microsoft: Get-WindowsUpdateLog
Microsoft: Windows Update Agent API
Microsoft: Windows Update error reference
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