Error 0x8004255C

Value: -2147211940 | 0x8004255C | 2147755356

What does it mean ?

The specified drive letter is not free to be assigned.
Value: 9564 | 0x255C | 0b0010010101011100

Where does it come from ?

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