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ERROR_GRAPHICS_LEADLINK_START_DEFERRED
Locate the failing graphics boundary: graphics leadlink start deferred
The useful interpretation of ERROR_GRAPHICS_LEADLINK_START_DEFERRED (0x40262437) starts at the graphics info boundary: Windows temporarily deferred starting the lead adapter until the linked configuration reached a usable state. In practical terms, inspect linked-adapter lead start scheduling before changing application-wide graphics settings.
This result: Informational graphics results are part of WDDM control flow. They must not automatically be surfaced as a fatal application error or translated into an unrelated Win32 code. 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 the result actionable
| Capture item | Why it matters for it |
|---|---|
| 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 | linked-adapter lead start scheduling |
| Rejected boundary | Windows temporarily deferred starting the lead adapter until the linked configuration reached a usable state |
| Decisive capture | lead and chain device instance IDs, PnP state, power state, start IRPs and deferral reason |
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 this result.
A controlled comparison
- Freeze the result generation. Record lead and chain device instance IDs, PnP state, power state, start IRPs and deferral reason. Before diagnosing this result, do not resize, hot-plug, recreate or release the object under examination.
- Run the narrow it comparison. start the linked stack from a clean boot and compare ordering with the chain devices already started. During the result comparison, keep every driver, monitor, resource format and unrelated policy unchanged.
- Observe the layer after it. for it, if the exact check passes, record the next HRESULT or visible outcome. A different downstream result shows that the boundary was crossed.
- Repeat it through a lifecycle transition. for it, exercise one relevant resize, mode switch, device recreation, hot-plug or session change and confirm that it does not reuse stale handles.
The comparison with ERROR_GRAPHICS_START_DEFERRED is especially useful: ERROR_GRAPHICS_START_DEFERRED applies to a general adapter start rather than specifically the lead link. Recording both names prevents a broad “graphics error” label from merging distinct ownership, capability and lifetime problems.
Correction and proof
Allow PnP to complete the deferred sequence and fix dependency ordering rather than forcing repeated starts. Repair of it 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 result 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 it; unrelated adapter, monitor and application state remains unchanged.
- debug-layer, ETW or driver diagnostics no longer report the rejected linked-adapter lead start scheduling contract during the same scenario.
- The application handles recurrence of it without an unbounded retry loop, leaked resource, duplicate composition target or stale topology handle.
Implementation notes
Log kernel graphics ETW, callback name, child or allocation identifiers, PnP state and the first returned NTSTATUS/HRESULT. When the 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 it 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 it.
Technical references
- Microsoft: Graphics error codes — background for the linked-adapter lead start scheduling boundary involved in it.
- Microsoft: DirectX graphics kernel subsystem
- Microsoft: Introduction to VidPNs
- Microsoft: WDDM TDR overview
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