Error 0xC00D1243

Value: -1072885181 | 0xC00D1243 | 3222082115

What does it mean ?

NS_E_PDA_SYNC_RUNNING  
It is not possible to perform the requested action because sync is in progress. You can either stop sync or wait for it to complete, and then try again.
Value: 4675 | 0x1243 | 0b0001001001000011

Where does it come from ?

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

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