Error 0x800C000D

Value: -2146697203 | 0x800C000D | 2148270093

What does it mean ?

INET_E_UNKNOWN_PROTOCOL  
The specified protocol is unknown.
Value: 13 | 0x000D | 0b0000000000001101

Where does it come from ?

FACILITY_INTERNET  
Wininet related (Internet APIs)
Value: 12 | 0x00C | 0b00001100

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