Error 0x80040115

Value: -2147221227 | 0x80040115 | 2147746069

What does it mean ?

_MAPI_E_NETWORK_ERROR  
MAPI: A network error occurred.
Value: 277 | 0x0115 | 0b0000000100010101

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

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