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WU_E_REVERT_NOT_ALLOWED
WU_E_REVERT_NOT_ALLOWED means the update cannot be reverted in its current state or through the current request. A revert action is not always the same as a normal uninstall and may be restricted by package type, source, or servicing state.
What to check
- Confirm whether the package is still present, staged, installed, or superseded.
- Check the update's supported removal or recovery procedure rather than assuming a universal rollback exists.
- Review the log context for policy, source, or state restrictions that preceded this code.
Microsoft: IUpdateInstaller interface
Microsoft: Windows Update log files
Microsoft: Windows Update error reference
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