Error 0x8004008C

Value: -2147221364 | 0x8004008C | 2147745932

What does it mean ?

IO_LOST_DELAYED_WRITE_NETWORK_SERVER_ERROR  
{Delayed Write Failed} Windows was unable to save all the data for the file %2; the data has been lost. This error was returned by the server on which the file exists. Please try to save this file elsewhere.
Value: 140 | 0x008C | 0b0000000010001100

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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