What does HRESULT 0xC02625E3 (ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED) mean?

ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED

Locate the failing graphics boundary: graphics mirroring devices not supported

ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, value 0xC02625E3, is produced by gdi monitor when the API was given a GDI mirroring device that has no corresponding physical monitor object. The investigation should stay attached to physical-monitor mapping for mirror drivers and to the exact generation in which it was obtained.

ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED: A display adapter can be enumerated without being attached to the current desktop or without owning a physical monitor. For ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, Keep those states distinct in UI and logs. For ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, the built-in one-line message identifies the immediate result; diagnosis also needs the producing API, object ownership and the display generation current at the time.

Evidence that makes this result actionable

For ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, preserve the unsigned HRESULT, symbolic name, first failing API and timestamp in one record. If cleanup later fails too, keep that secondary result separately from ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED.

A controlled comparison

1. Freeze the ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED generation. Record DISPLAY_DEVICE flags, mirroring-driver identity, HMONITOR enumeration and requested monitor operation. Before diagnosing ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, do not resize, hot-plug, recreate or release the object under examination.
2. Run the narrow ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED comparison. choose a physical display output from current enumeration and compare with the mirror device. During the ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED comparison, keep every driver, monitor, resource format and unrelated policy unchanged.
3. Observe the layer after ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED. For ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, if the exact check passes, record the next HRESULT or visible outcome. A different downstream result shows that the ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED boundary was crossed.
4. Repeat ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED through a lifecycle transition. For ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, exercise one relevant resize, mode switch, device recreation, hot-plug or session change and confirm that this result does not reuse stale handles.

The comparison with ERROR_GRAPHICS_NO_MONITORS_CORRESPOND_TO_DISPLAY_DEVICE is especially useful: ERROR_GRAPHICS_NO_MONITORS_CORRESPOND_TO_DISPLAY_DEVICE can occur for other devices with no monitor association. For ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, recording both names prevents a broad “graphics error” label from merging distinct ownership, capability and lifetime problems.

Correction and proof

Exclude mirroring devices from physical monitor configuration paths. Repair of ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED is complete only when the original call succeeds or returns its documented nonfatal status and the same lifetime test remains correct after a second display transition.

• The ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED trace identifies one producing API and one current graphics object, rather than only the final UI symptom.
• The passing run changes exactly the condition described for ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED; unrelated adapter, monitor and application state remains unchanged.
• For ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, debug-layer, ETW or driver diagnostics no longer report the rejected physical-monitor mapping for mirror drivers contract during the same scenario.
• The application handles recurrence of ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED without an unbounded retry loop, leaked resource, duplicate composition target or stale topology handle.

Implementation notes for ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED

For ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED, log EnumDisplayDevices snapshot, DISPLAY_DEVICE flags, session ID, HMONITOR list and physical-monitor count. When the ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED path returns a count, size, status flag or replacement object, retain it even on a nonfatal result because it can direct the next call.

A production fallback for ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED should be explicit: pause rendering, re-enumerate, rebuild one cache entry, recreate a device, or decline a protected path only when this layer calls for that action. Reinstalling every display component, deleting all caches or forcing a resolution change is not an evidence-based fix for ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED.

Technical references

• Microsoft: Multiple display monitors — background for the physical-monitor mapping for mirror drivers boundary involved in ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED.
• Microsoft: Monitor configuration functions — background for the physical-monitor mapping for mirror drivers boundary involved in ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED.
• Microsoft: EnumDisplayDevices — background for the physical-monitor mapping for mirror drivers boundary involved in ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED.
• Microsoft: Graphics error codes — background for the physical-monitor mapping for mirror drivers boundary involved in ERROR_GRAPHICS_MIRRORING_DEVICES_NOT_SUPPORTED.

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