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What does HRESULT 0xC0262346 (ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED) mean?

 
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ERROR_GRAPHICS_INVALID_PATH_CONTENT_GEOMETRY_TRANSFORMATION ERROR_GRAPHICS_INVALID_GAMMA_RAMP

ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED

What Windows rejected: graphics path content geometry transformation not supported

ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED, value 0xC0262346, is produced by vidpn when the requested scaling or rotation is structurally valid but unsupported on that source-target path. The investigation should stay attached to path transformation capability and to the exact generation in which it was obtained.

ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED: VidPN handles and subobjects are generation-bound. For ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED, A monitor hot-plug, docking action, session switch or mode commit can invalidate an otherwise well-formed cached object. For ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_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.

Build a useful diagnostic record

Capture itemWhy it matters for ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED
Current graph stateVidPN, topology, source and target mode sets, and the present path connecting them
Supporting tracesource and target IDs, topology generation, path descriptors, pinned modes, mode-set handles and monitor timing data
Object identitypath transformation capability
Rejected boundarythe requested scaling or rotation is structurally valid but unsupported on that source-target path
Decisive capturerequested transformation, driver-reported support flags, source/target modes and connector

For ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_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_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED.

Separate state from capability

  1. Freeze the ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED generation. Record requested transformation, driver-reported support flags, source/target modes and connector. Before diagnosing ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED, do not resize, hot-plug, recreate or release the object under examination.
  2. Run the narrow ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED comparison. select identity or another advertised transformation while keeping modes fixed. During the ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED comparison, keep every driver, monitor, resource format and unrelated policy unchanged.
  3. Observe the layer after ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED. For ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED, if the exact check passes, record the next HRESULT or visible outcome. A different downstream result shows that the ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED boundary was crossed.
  4. Repeat ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED through a lifecycle transition. For ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_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_INVALID_PATH_CONTENT_GEOMETRY_TRANSFORMATION is especially useful: ERROR_GRAPHICS_INVALID_PATH_CONTENT_GEOMETRY_TRANSFORMATION rejects malformed transformation data. For ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED, recording both names prevents a broad “graphics error” label from merging distinct ownership, capability and lifetime problems.

Verify the repaired path

Offer only transformations returned by cofunctional modality enumeration. Repair of ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_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.

Implementation notes for ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED

For ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED, log source and target IDs, topology generation, path descriptors, pinned modes, mode-set handles and monitor timing data. When the ERROR_GRAPHICS_PATH_CONTENT_GEOMETRY_TRANSFORMATION_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_PATH_CONTENT_GEOMETRY_TRANSFORMATION_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_PATH_CONTENT_GEOMETRY_TRANSFORMATION_NOT_SUPPORTED.

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