What does HRESULT 0x80249004 (WU_E_INVENTORY_UNEXPECTED) mean?

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An inventory error occurred that was not covered by a more specific Windows Update inventory code.

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WU_E_INVENTORY_RESULT_UPLOAD_FAILED	WU_E_INVENTORY_WMI_ERROR

WU_E_INVENTORY_UNEXPECTED

WU_E_INVENTORY_UNEXPECTED is a catch-all result from the inventory component. The code itself does not identify the failing collector, rule, or service operation, so the earlier log records are essential.

Useful approach

Search backward from this HRESULT in WindowsUpdate.log for the first component-specific error.
Check whether a single update service, hardware class, or device model is affected.
Do not treat this as a reason to delete caches before you have identified the failing inventory phase.

Microsoft: Get-WindowsUpdateLog

Microsoft: Windows Update Agent API

Microsoft: Windows Update error reference

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