Error 0x8004400C

Value: -2147205108 | 0x8004400C | 2147762188

What does it mean ?

PEOPLE_IMPORT_E_DC_NOT_AVAILABLE  
Error (%1) occurred, which may have resulted from the unavailability of directory service server (%2). If the auto discovery option is turned on, import will re-try it with the newly discovered domain controller. Otherwise, verify your import settings and make sure the server is still available.
Value: 16396 | 0x400C | 0b0100000000001100

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