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What does HRESULT 0x802A010C (UI_E_PRIMITIVE_OUT_OF_BOUNDS) mean?

 
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UI_E_INVALID_DIMENSION UI_E_WINDOW_CLOSED

UI_E_PRIMITIVE_OUT_OF_BOUNDS

The scope of UI_E_PRIMITIVE_OUT_OF_BOUNDS is Windows Animation Manager: an interpolation primitive begins at or beyond the interpolator duration. Preserve 0x802A010C beside the returning call before cleanup or retry creates a more generic secondary failure.

Read the condition first

A custom interpolator is a timed sequence of primitives. A primitive positioned outside the total duration cannot contribute a valid interval, even if its own parameters are numerically valid.

Keep neighboring conditions separate

UI_E_FP_OVERFLOW is numeric range failure; OUT_OF_BOUNDS is a finite but invalid timeline position.

Do not extend total duration automatically without confirming the intended animation semantics.

Incident record

  • Primitive start time.
  • Total interpolator duration.
  • Primitive duration and order.
  • Unit conversion and accumulated offsets.

Reproduce without destroying evidence

The investigation should change one variable at a time and keep the original failing sample.

  1. First: Compute cumulative offsets before adding primitives.
  2. Next: Use a single primitive starting at zero.
  3. Then: Check strict less-than bounds at the endpoint.
  4. Finally: Test zero-duration and exact-end cases explicitly.

Three useful controls

  • Fresh storyboard or animation object: a changed result separates retained object, connection, path, host, or device state from the original input. Hold constant: keep the timeline, transitions, and manager version fixed.
  • Reduced failing operation: If this result follows the reduced step, the rejecting transition is localized. Hold constant: retain primitive start time and remove only unrelated work.
  • Targeted corrective control: Use this as a diagnostic branch rather than a blanket workaround: compute cumulative offsets before adding primitives. Hold constant: keep the original failing sample available for the final regression test.

Definition of done

Closure requires every primitive occupies a valid interval within the interpolator and endpoint tests have explicit expected results; then repeat the next lifecycle operation to detect stale state.

Technical references

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


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