Error 0x8802C004

Value: -2013085692 | 0x8802C004 | 2281881604

What does it mean ?

E_SYNCENGINE_UNKNOWN_SERVICE_ERROR  
There was a problem connecting to the service. Please try again later.
Value: 49156 | 0xC004 | 0b1100000000000100

Where does it come from ?

FACILITY_SYNCENGINE  
Synchronization Engine
Value: 2050 | 0x802 | 0b100000000010

Other Errors for FACILITY_SYNCENGINE