Error 0x80072F0C

Value: -2147012852 | 0x80072F0C | 2147954444

What does it mean ?

ERROR_INTERNET_CLIENT_AUTH_CERT_NEEDED  
The server is requesting client authentication.
Value: 12044 | 0x2F0C | 0b0010111100001100
WININET_E_CLIENT_AUTH_CERT_NEEDED  
A certificate is required to complete client authentication
Value: 12044 | 0x2F0C | 0b0010111100001100
ERROR_WINHTTP_CLIENT_AUTH_CERT_NEEDED  
A certificate is required to complete client authentication
Value: 12044 | 0x2F0C | 0b0010111100001100

Where does it come from ?

FACILITY_WIN32  
Provides a way to handle error codes from functions in the Win32 API as an HRESULT. (Error codes in 16 - bit OLE that duplicated Win32 error codes have also been changed to FACILITY_WIN32)
Value: 7 | 0x007 | 0b00000111

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