What does HRESULT 0x80243002 (WU_E_INSTALLATION_RESULTS_INVALID_DATA) mean?

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Windows Update could not read installation results because the stored result data was invalid.

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WU_E_INSTALLATION_RESULTS_UNKNOWN_VERSION	WU_E_INSTALLATION_RESULTS_NOT_FOUND

WU_E_INSTALLATION_RESULTS_INVALID_DATA

WU_E_INSTALLATION_RESULTS_INVALID_DATA means the registry-backed result data for a download or installation operation could not be interpreted. The code concerns recorded state, which may differ from the real package state on disk.

Useful checks

Inspect WindowsUpdate.log and, for component packages, CBS.log around the original install time.
Check whether the update is listed as installed, pending, failed, or superseded before re-running it.
Use supported repair guidance when the device has broader servicing corruption rather than editing result data manually.

Microsoft: IUpdateInstaller interface

Microsoft: Windows Update common errors and mitigation

Microsoft: Windows Update error reference

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