HRESULT 0x80243003 (WU_E_INSTALLATION_RESULTS_NOT

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WU_E_INSTALLATION_RESULTS_NOT_FOUND the results of download and installation are not available; the operation may have failed to start.

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WU_E_INSTALLATION_RESULTS_INVALID_DATA	WU_E_TRAYICON_FAILURE

WU_E_INSTALLATION_RESULTS_NOT_FOUND

WU_E_INSTALLATION_RESULTS_NOT_FOUND means Windows Update has no result record for the requested operation. Often the install never started, was cancelled before execution, or the caller queried a different session than the one that performed the work.

What to check

Check the log timeline for a matching BeginInstall, download, or installer invocation.
For automation, keep the update session and result object correlated with the request that started the operation.
Verify the actual update state before creating a second install request.

Microsoft: IUpdateInstaller interface

Microsoft: Windows Update Agent API reference

Microsoft: Windows Update error reference

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