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UCEERR_CONNECTIONIDLOOKUPFAILED
UCEERR_CONNECTIONIDLOOKUPFAILED is a Windows User Composition Engine (UCE) HRESULT. It indicates that a composition command refers to a channel connection that is no longer valid or was never established.
What to check for UCEERR_CONNECTIONIDLOOKUPFAILED
- Check dispatcher shutdown, application exit, and window-close paths for pending rendering work.
- Do not retain callbacks that submit visual updates after their owning UI context is gone.
- Capture preceding transport or render-thread errors that may have disconnected the channel.
Microsoft guidance for WPF render-thread failures
Diagnostic interpretation
This result has the HRESULT value 0x88980408. 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 / connectionidlookupfailed operation.
- check the documented return contract of the specific API because the same HRESULT can require different recovery in different interfaces.
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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