What does HRESULT 0xC026234E (ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE) mean?

ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE

Interpret the result in its owning layer: graphics invalid path content type

ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE (0xC026234E) belongs to the vidpn layer. It marks the path content type is not a recognized graphics/video content classification, rather than a generic rendering failure. The object that owns the decision is present-path content classification.

Validate content classification independently

Content type describes the presentation carried by the path and can affect later protection and optimization choices. Preserve the exact D3DKMDT_VIDPN_PRESENT_PATH content classification, driver interface version and whether the path carries ordinary graphics or video. Do not “fix” this code by changing scan timing or source size. The comparison should alter only the content-type enum while leaving the source mode, target mode and transformations unchanged.

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

Capture before recreating objects

For ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE, 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_INVALID_PATH_CONTENT_TYPE.

Reproduce one variable at a time

1. Freeze the ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE generation. Record content-type enum, path source/target IDs, protection request and driver-model version. Before diagnosing ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE, do not resize, hot-plug, recreate or release the object under examination.
2. Run the narrow ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE comparison. use the documented graphics or video content type on the same path. During the ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE comparison, keep every driver, monitor, resource format and unrelated policy unchanged.
3. Observe the layer after ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE. For ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE, if the exact check passes, record the next HRESULT or visible outcome. A different downstream result shows that the ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE boundary was crossed.
4. Repeat ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE through a lifecycle transition. For ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE, 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_COPYPROTECTION_TYPE is especially useful: ERROR_GRAPHICS_INVALID_COPYPROTECTION_TYPE concerns output protection selection. For ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE, recording both names prevents a broad “graphics error” label from merging distinct ownership, capability and lifetime problems.

Recovery contract

Carry a supported content classification from path creation through commit. Repair of ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE 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_INVALID_PATH_CONTENT_TYPE 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_INVALID_PATH_CONTENT_TYPE; unrelated adapter, monitor and application state remains unchanged.
• For ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE, debug-layer, ETW or driver diagnostics no longer report the rejected present-path content classification contract during the same scenario.
• The application handles recurrence of ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE without an unbounded retry loop, leaked resource, duplicate composition target or stale topology handle.

Implementation notes for ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE

For ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE, log source and target IDs, topology generation, path descriptors, pinned modes, mode-set handles and monitor timing data. When the ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE 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_INVALID_PATH_CONTENT_TYPE 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_INVALID_PATH_CONTENT_TYPE.

Technical references

• Microsoft: Introduction to Video Present Networks — background for the present-path content classification boundary involved in ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE.
• Microsoft: VidPN objects and interfaces — background for the present-path content classification boundary involved in ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE.
• Microsoft: Enumerating cofunctional VidPN modes — background for the present-path content classification boundary involved in ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE.
• Microsoft: Determining VidPN support — background for the present-path content classification boundary involved in ERROR_GRAPHICS_INVALID_PATH_CONTENT_TYPE.

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