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STATUS_GRAPHICS_CHILD_DESCRIPTOR_NOT_SUPPORTED
The child cannot expose the requested descriptor
STATUS_GRAPHICS_CHILD_DESCRIPTOR_NOT_SUPPORTED is a Windows NTSTATUS value from the graphics/display facility. It belongs to the WDDM kernel display stack rather than to a Win32 GDI error alone, so the useful context is usually the adapter, VidPN object, child device, present path, or primary allocation involved in the call.
Some display children can expose descriptors such as monitor identification or timing data. This status means the specified child device does not support descriptor exposure for the requested query.
That is different from a corrupt EDID or a missing monitor. The child may be a connector or virtual output that simply does not provide descriptors through this interface. Check child capabilities before treating the descriptor path as a hardware failure.
What to check
- Inspect DXGK_CHILD_DESCRIPTOR and child capabilities for descriptor support.
- Separate unsupported descriptor exposure from descriptor read or parse errors.
- For integrated, muxed, Miracast, or virtual targets, verify the expected descriptor source.
References
- Microsoft: Child devices of the display adapter
- Microsoft: Enumerating child devices of a display adapter
- Microsoft: Display/graphics driver DDI overview
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