Error 0x80045393

Value: -2147200109 | 0x80045393 | 2147767187

What does it mean ?

FSRM_E_CANNOT_REMOVE_READONLY  
File Server Resource Manager could not remove the read-only attribute from a file.
Value: 21395 | 0x5393 | 0b0101001110010011

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

StackOverflow

Other Errors for FACILITY_ITF