What does HRESULT 0x4026243C (ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS) mean?

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We can depend on the child device presence returned by the driver.

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ERROR_GRAPHICS_START_DEFERRED	EVT_WDSMCS_S_PARAMETERS_READ

ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS

Locate the failing graphics boundary: graphics dependable child status

ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS (0x4026243C) belongs to the graphics info layer. It marks the driver marked its child presence result as reliable for the current detection cycle, rather than a generic rendering failure. The object that owns the decision is authoritative display-child presence report.

ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS: Informational graphics results are part of WDDM control flow. For ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, They must not automatically be surfaced as a fatal application error or translated into an unrelated Win32 code. For ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, 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

Capture item	Why it matters for `ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS`
Rejected boundary	the driver marked its child presence result as reliable for the current detection cycle
Decisive capture	child UID, detection mechanism, timestamp, connector state and whether the result came from interrupt or poll
Current graph state	WDDM kernel/miniport callback and the transient object state carried by that callback
Supporting trace	kernel graphics ETW, callback name, child or allocation identifiers, PnP state and the first returned NTSTATUS/HRESULT
Object identity	authoritative display-child presence report

For ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, 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_DEPENDABLE_CHILD_STATUS.

A controlled comparison

Freeze the ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS generation. Record child UID, detection mechanism, timestamp, connector state and whether the result came from interrupt or poll. Before diagnosing ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, do not resize, hot-plug, recreate or release the object under examination.
Run the narrow ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS comparison. compare one detection cycle with stable connector evidence against a deliberately indeterminate cycle. During the ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS comparison, keep every driver, monitor, resource format and unrelated policy unchanged.
Observe the layer after ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS. For ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, if the exact check passes, record the next HRESULT or visible outcome. A different downstream result shows that the ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS boundary was crossed.
Repeat ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS through a lifecycle transition. For ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, 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_UNKNOWN_CHILD_STATUS is especially useful: ERROR_GRAPHICS_UNKNOWN_CHILD_STATUS says the current presence answer cannot be relied upon. For ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, recording both names prevents a broad “graphics error” label from merging distinct ownership, capability and lifetime problems.

Correction and proof

Use the result to update topology while retaining normal hot-plug invalidation rules. Repair of ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS 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_DEPENDABLE_CHILD_STATUS 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_DEPENDABLE_CHILD_STATUS; unrelated adapter, monitor and application state remains unchanged.
For ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, debug-layer, ETW or driver diagnostics no longer report the rejected authoritative display-child presence report contract during the same scenario.
The application handles recurrence of ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS without an unbounded retry loop, leaked resource, duplicate composition target or stale topology handle.

Implementation notes for `ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS`

For ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS, log kernel graphics ETW, callback name, child or allocation identifiers, PnP state and the first returned NTSTATUS/HRESULT. When the ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS 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_DEPENDABLE_CHILD_STATUS 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_DEPENDABLE_CHILD_STATUS.

Technical references

Microsoft: Graphics error codes — background for the authoritative display-child presence report boundary involved in ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS.
Microsoft: DirectX graphics kernel subsystem — background for the authoritative display-child presence report boundary involved in ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS.
Microsoft: Introduction to VidPNs — background for the authoritative display-child presence report boundary involved in ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS.
Microsoft: WDDM TDR overview — background for the authoritative display-child presence report boundary involved in ERROR_GRAPHICS_DEPENDABLE_CHILD_STATUS.

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