Error 0x80041B5F

Value: -2147214497 | 0x80041B5F | 2147752799

What does it mean ?

FAX_E_DIRECTORY_IN_USE  
The fax server cannot use the same folder for both the inbox and the sent-items archives.
Value: 7007 | 0x1B5F | 0b0001101101011111

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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