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UCEERR_GRAPHICSSTREAMUNAVAILABLE
UCEERR_GRAPHICSSTREAMUNAVAILABLE is a Windows User Composition Engine (UCE) HRESULT. It indicates that the engine cannot obtain the graphics stream required for the requested composition operation.
What to check for UCEERR_GRAPHICSSTREAMUNAVAILABLE
- Check graphics-device state, display session availability, and target-window lifetime.
- Recreate device-dependent resources after a reset or a detected rendering-channel failure.
- Test with simpler graphics content to distinguish a resource shortage from a driver issue.
Microsoft guidance for WPF render-thread failures
Diagnostic discriminator: Verify graphics-stream availability for the specific composition resource/channel. This status means the required stream cannot be obtained, distinct from attempting to reopen an already open stream.
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