Error 0x80042597

Value: -2147211881 | 0x80042597 | 2147755415

What does it mean ?

VDS_E_FAILED_TO_OFFLINE_DISK  
The offline operation failed.
Value: 9623 | 0x2597 | 0b0010010110010111

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

Other Errors for FACILITY_ITF