Error 0xC00D123C

Value: -1072885188 | 0xC00D123C | 3222082108

What does it mean ?

NS_E_PDA_FAILED_TO_ENCRYPT_TRANSCODED_FILE  
Windows Media Player cannot convert the file. The file might have been encrypted by the Encrypted File System (EFS). Try decrypting the file first and then synchronizing it. For information about how to decrypt a file, see Windows Help and Support.
Value: 4668 | 0x123C | 0b0001001000111100

Where does it come from ?

FACILITY_MEDIASERVER  
Windows Media Server
Value: 13 | 0x00D | 0b00001101

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