Error 0xC00D2EF3

Value: -1072877837 | 0xC00D2EF3 | 3222089459

What does it mean ?

NS_E_SESSION_NOT_FOUND  
Session not found.
Value: 12019 | 0x2EF3 | 0b0010111011110011

Where does it come from ?

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

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