What does HRESULT 0x80249001 (WU_E_INVENTORY_PARSEFAILED) mean?

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Description:

Windows Update could not parse the inventory rule file required for update applicability.

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WU_E_DS_UNEXPECTED	WU_E_INVENTORY_GET_INVENTORY_TYPE_FAILED

WU_E_INVENTORY_PARSEFAILED

WU_E_INVENTORY_PARSEFAILED means the Windows Update inventory component could not parse a rule file used to collect device information for update applicability. The failure is in the rule or its delivered data, not in downloading the update payload.

What to check

Generate WindowsUpdate.log and identify the rule name, update service, and parser error immediately before this HRESULT.
Determine whether the error is limited to one managed update source or affects all scans on the device.
For an internally managed catalog, verify the integrity of the inventory metadata rather than editing local rule files by hand.

Get-WindowsUpdateLog

Microsoft: Windows Update log files

Microsoft: Windows Update Agent API

Microsoft: Windows Update error reference

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