Error 0x000D0000

Value: 851968 | 0x000D0000 | 851968

What does it mean ?

NS_S_CALLPENDING  
The requested operation is pending completion.
Value: 0 | 0x0000 | 0b0000000000000000

Where does it come from ?

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

Other Errors for FACILITY_MEDIASERVER