Error 0x80190191

Value: -2145844847 | 0x80190191 | 2149122449

What does it mean ?

HTTP_E_STATUS_DENIED  
Unauthorized (401).
Value: 401 | 0x0191 | 0b0000000110010001

Where does it come from ?

FACILITY_HTTP  
HTTP support
Value: 25 | 0x019 | 0b00011001

Other Errors for FACILITY_HTTP