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IMAPI_E_IMPORT_MEDIA_NOT_ALLOWED
IMAPI_E_IMPORT_MEDIA_NOT_ALLOWED means IMAPI does not permit the requested multisession workflow on the current medium. Microsoft documents a specific set of supported multisession disc types; support also depends on the writer and the multisession interface reported for the inserted media.
Verify the physical media type against the multisession workflow
- Record
CurrentPhysicalMediaTypeand the multisession interfaces returned by the data writer. - Do not assume that rewritability or free capacity alone makes a medium eligible for session import and append.
- Use a new-image or overwrite workflow when the media type does not support IMAPI multisession.
This differs from IMAPI_E_NO_COMPATIBLE_MULTISESSION_TYPE, which concerns the set of multisession interfaces available for the current medium. Here the import policy rejects the media type itself. Rebuilding the filesystem as UDF or ISO 9660 does not make an unsupported physical medium valid for the same append path.
Creating a multisession disc · Multisession interfaces · Checking media support
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