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MILERR_MALFORMED_GUIDELINE_DATA
MILERR_MALFORMED_GUIDELINE_DATA is a Windows Media Integration Layer (MIL) HRESULT. It indicates that guideline values are unsorted, contain NaN, or otherwise cannot be used for pixel alignment.
What to check for MILERR_MALFORMED_GUIDELINE_DATA
- Validate guideline arrays for finite values and strictly ordered coordinate sequences.
- Check layout calculations that can produce duplicate, reversed, or non-finite snapping positions.
- Recreate guideline data after changing DPI, transforms, or the target render size.
Microsoft documentation about WPF hardware-accelerated rendering
Diagnostic interpretation
This result has the HRESULT value 0x8898008C. AllStat records the condition as “Guideline coordinates are not sorted properly or contain NaNs.”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the milerr / malformed / guideline / data operation.
- Preserve the first failure in the call chain; a later HRESULT can describe cleanup rather than the original milerr / malformed / guideline / data condition.
Retry and recovery
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