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WU_E_CALL_CANCELLED
WU_E_CALL_CANCELLED means that the Windows Update Agent operation was cancelled. The code does not identify whether cancellation happened during search, download, or installation.
How to investigate
- Determine which component or user initiated the cancellation.
- Check the state of each selected update before retrying; some work may already have completed.
- Use the operation-specific result and event logs to separate an intentional cancel from a policy or shutdown cancellation.
Keep the phase and result object with the cancellation
A generic cancellation is much less useful after search, download, and installation have been merged into one job log. WUA represents these as distinct operations created from an update session, and installation results can also expose per-update outcomes. Record which WUA object was active, whether cancellation was requested by the caller, and whether the service was stopping at the same time.
Do not assume that a retry starts from zero. Content may already be cached, an update may already have changed state, or part of a multi-update installation may have completed. A fresh search plus the operation-specific result lets the caller build a new request from current state instead of replaying the cancelled collection blindly.
References
References
- Microsoft: IUpdateSession operations
- Microsoft: WUA search, download, and installation workflow
- Microsoft: Windows Update log files
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