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UCEERR_FEEDBACK_UNSUPPORTED
UCEERR_FEEDBACK_UNSUPPORTED is a Windows User Composition Engine (UCE) HRESULT. It indicates that the requested feature requires transport feedback that is not implemented or available in the active composition path.
What to check for UCEERR_FEEDBACK_UNSUPPORTED
- Check feature, transport, and session compatibility before enabling the operation.
- Use a supported fallback behavior that does not require composition feedback.
- Test across the target Windows versions and local or remote display scenarios used by the application.
Microsoft guidance for WPF render-thread failures
Diagnostic interpretation
This result has the HRESULT value 0x88980417. AllStat records the condition as “it”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the uceerr / feedback operation.
- compare the failing machine with a working one at the same configuration boundary: component version, policy, registration, identity, and target resource.
Retry and recovery
Retry this result only when the owning API documents a transient state or after the condition described as “it” has changed.
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