Error 0x80040600

Value: -2147219968 | 0x80040600 | 2147747328

What does it mean ?

FHSVC_E_BACKUP_BLOCKED  
File History Service: Backups are blocked for the given configuration
Value: 1536 | 0x0600 | 0b0000011000000000

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