Error 0x8004101D

Value: -2147217379 | 0x8004101D | 2147749917

What does it mean ?

SYNC_E_INTERNAL_ERROR  
An internal error occurred in the synchronization runtime.
Value: 4125 | 0x101D | 0b0001000000011101

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

StackOverflow

Other Errors for FACILITY_ITF