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UCEERR_TRANSPORTOVERLOADED
UCEERR_TRANSPORTOVERLOADED is a Windows User Composition Engine (UCE) HRESULT. It indicates that the composition channel cannot keep up with the volume of pending graphics or visual-update traffic.
What to check for UCEERR_TRANSPORTOVERLOADED
- Profile high-frequency property changes, animation, layout invalidation, and rendering callbacks.
- Coalesce frequent updates and avoid generating work faster than the rendering channel can consume it.
- Check for a blocked renderer or GPU issue if the workload is normally modest.
Microsoft guidance for WPF render-thread failures
Diagnostic interpretation
This result has the HRESULT value 0x88980422. 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 / transportoverloaded 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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