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WU_E_EXTENDEDERROR_NOTSET
WU_E_EXTENDEDERROR_NOTSET means an installation result did not contain a separate extended error code. It is diagnostic information about the result object, not an explanation of why the update failed.
How to investigate
- Use the primary HRESULT and the lines immediately before it in
WindowsUpdate.log. - Check the per-update result and any installer or CBS error that preceded the generic result.
- Do not stop at this code; it simply tells you that no additional extended code was supplied.
Microsoft: IUpdateInstaller::Install
Microsoft: Windows Update log files
Microsoft: Windows Update error reference
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