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MSSIPOTF_E_FAILED_HINTS_CHECK
The font failed a checker-specific hints validation
MSSIPOTF_E_FAILED_HINTS_CHECK reports a failed hints check, but the published Windows error text does not identify a particular OpenType table or a precise failed predicate. It should therefore not be treated as proof that only TrueType instruction bytecode is defective.
Use the HRESULT as a signal to preserve the detailed output from the checker and inspect the produced font with an independent validator. Version, table layout, and any processing options can matter because this status is less specific than the directory, checksum, or DSIG errors in the same family.
How to investigate
- Keep the full log, tool version, font index, and any optimization or signing options.
- Run a second parser or sanitizer to obtain a table-level diagnosis before editing hint data.
- Rebuild from source when possible; low-level instruction changes can affect rendering and other integrity checks.
References
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