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STATUS_GRAPHICS_INVALID_CLIENT_TYPE
The VidPN client type selector is invalid
Some VidPN operations distinguish the client or owner that initiated a mode-management request. This status means the client type value passed to the interface is not recognized.
This is a parameter-contract error. It can arise from uninitialized structure fields, using a value from another API layer, or passing a new enum value to an older driver/interface path that does not understand it. It is not a monitor or timing capability failure.
What to check
- Log the numeric client type and the caller path that filled it.
- Initialize the complete VidPN request structure before assigning selected fields.
- Check version-dependent code paths when the same binary supports several WDDM generations.
References
- Microsoft: VidPN objects and interfaces
- Microsoft: WDDM design guide
- Microsoft: D3DKMDT display data types
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