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WU_E_INVALID_OPERATION
WU_E_INVALID_OPERATION means a Windows Update object was used in the wrong state. For example, a caller may try to use a search, download, or install object before the preceding operation has completed.
For API callers
- Record the full lifecycle of the WUA object and the HRESULT returned by each call.
- Do not reuse a result, callback, or asynchronous job after cancellation or completion without following the documented flow.
- Check whether another operation is still active on the same update session.
Microsoft: Using the Windows Update Agent API
Microsoft: Windows Update error reference
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