What does HRESULT 0x802A0001 (UI_E_CREATE_FAILED) mean?

 
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UI_E_CREATE_FAILED

Within Windows Animation Manager, UI_E_CREATE_FAILED reports that object construction failed before a usable animation object was returned. Diagnosis of UI_E_CREATE_FAILED should follow the original owner and generation rather than treating the visible symptom as the cause.

Facts that change the diagnosis

CaptureDiagnostic value
Returning creation method and requested interface for UI_E_CREATE_FAILED.For UI_E_CREATE_FAILED, this identifies the exact object or resource generation involved and helps test the Windows Animation Manager boundary.
Manager and transition-library identities for UI_E_CREATE_FAILED.For UI_E_CREATE_FAILED, this places the failure on the lifecycle or transaction timeline and helps test the Windows Animation Manager boundary.
Output pointer state and allocation pressure for UI_E_CREATE_FAILED.For UI_E_CREATE_FAILED, this separates caller input from environment and service state and helps test the Windows Animation Manager boundary.
Thread apartment and callback activity for UI_E_CREATE_FAILED.For UI_E_CREATE_FAILED, this provides a stable comparison across retries or another machine and helps test the Windows Animation Manager boundary.

Subsystem meaning

During a UI_E_CREATE_FAILED investigation, Windows Animation is a stateful COM subsystem. For UI_E_CREATE_FAILED, animation variables, transitions and storyboards are created under a manager, scheduled against a monotonic animation time, updated before drawing, and eventually sealed or released. When UI_E_CREATE_FAILED is returned, a visible glitch can therefore be downstream of a lifecycle, ownership, timeline, callback, or numeric contract failure.

For UI_E_CREATE_FAILED, creation can fail at manager, variable, storyboard, transition-library, or timer boundaries. When UI_E_CREATE_FAILED is returned, identify the exact factory method and preserve whether the output pointer stayed null; a later animation scheduling failure is a different stage.

For UI_E_CREATE_FAILED, the first owner to inspect is the animation manager, storyboard, transition, timer, or callback that returned the HRESULT.

Isolation workflow

When UI_E_CREATE_FAILED is returned, use a disposable control object, repository copy, file, or device association where the subsystem permits it.

  1. First: Create a manager and one animation variable with no callbacks.
  2. Next: Add the requested transition library or timer separately.
  3. Then: Check every creation HRESULT before dereferencing the output.
  4. Finally: Repeat under the same COM apartment with a fresh manager generation.

Avoid the tempting broad fix

During a UI_E_CREATE_FAILED investigation, it is earlier than storyboard validation or playback: no valid object exists yet.

For UI_E_CREATE_FAILED, do not substitute a null pointer crash or E_OUTOFMEMORY assumption for the original creation HRESULT.

Expected branches

ControlInterpretation for UI_E_CREATE_FAILEDHold constant
Same input, fresh object or connectionFor UI_E_CREATE_FAILED, if the result disappears, retained lifecycle or ownership state is implicated.While diagnosing UI_E_CREATE_FAILED, keep the original data, account, device, or timeline parameters unchanged.
Same object, reduced operationFor UI_E_CREATE_FAILED, if the result follows one specific transition, statement, file, or ceremony step, the failure is localized.While diagnosing UI_E_CREATE_FAILED, remove only unrelated work and keep the first failing boundary visible.
Same operation, controlled environmentFor UI_E_CREATE_FAILED, if the result follows one machine, account, volume, network, or device, environment matters.While diagnosing UI_E_CREATE_FAILED, keep versions and identity explicit rather than comparing only the final message.

Regression proof

Verify UI_E_CREATE_FAILED with the original scenario, one boundary case, and one deliberate failure; success means the exact creation call repeatedly returns S_OK and produces an object that can complete one minimal lifecycle.

Technical references

The references below define the API family or storage/protocol behavior used to interpret UI_E_CREATE_FAILED.


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