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MILERR_SCANNER_FAILED
MILERR_SCANNER_FAILED is a Windows Media Integration Layer (MIL) HRESULT. It indicates that MIL could not scan or validate the data stream required for the requested graphics operation.
Diagnostic discriminator: Reduce the failing graphics command or data stream to the smallest reproducer and preserve the first validation failure. If a simple known-good stream succeeds, malformed serialized state or resource lifetime is stronger evidence than device outage.
What to check for MILERR_SCANNER_FAILED
- Validate the input data, resource lifetime, and any serialized or marshalled graphics commands.
- Check whether the failure follows corrupted state, invalid geometry, or an earlier rendering exception.
- Reduce the request to a simple known-good drawing operation to isolate the problematic content.
Microsoft documentation about WPF hardware-accelerated rendering
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