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MILERR_SCREENACCESSDENIED
MILERR_SCREENACCESSDENIED is a Windows Media Integration Layer (MIL) HRESULT. It indicates that the process cannot access the screen resource needed for the requested rendering operation.
What to check for MILERR_SCREENACCESSDENIED
- Check session state, desktop isolation, remote-session restrictions, and security context.
- Verify that the target window and display resource still exist and belong to the current interactive session.
- Do not attempt to bypass screen-access restrictions with elevated privileges unless the scenario requires them.
Microsoft documentation about WPF hardware-accelerated rendering
Diagnostic interpretation of MILERR_SCREENACCESSDENIED
MILERR_SCREENACCESSDENIED has the HRESULT value 0x88980005. AllStat records the condition as “MILERR_SCREENACCESSDENIED”. For MILERR_SCREENACCESSDENIED, in practice, interpret that wording at the boundary owned by the Windows component or COM interface that returned the HRESULT, rather than treating the value as a generic Windows message.
Evidence to capture for MILERR_SCREENACCESSDENIED
- Record the exact COM method or Windows API, its input object, the calling thread, and the full 0x88980005 value before a wrapper converts it to an exception or Boolean result.
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions MILERR_SCREENACCESSDENIED or the milerr / screenaccessdenied operation.
- Reproduce MILERR_SCREENACCESSDENIED with the smallest valid input and note whether the result changes with identity, architecture, service state, or target object.
Retry and recovery for MILERR_SCREENACCESSDENIED
Retry MILERR_SCREENACCESSDENIED only when the owning API documents a transient state or after the condition described as “MILERR_SCREENACCESSDENIED” has changed. For MILERR_SCREENACCESSDENIED, configuration, policy, format, and authorization failures normally require correction first; an immediate loop can hide the original call site and add secondary errors.
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