ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
ServicePointManager.SecurityProtocol = (SecurityProtocolType)3072;
ServicePointManager.ServerCertificateValidationCallback = delegate { return true; };
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Ciphers\Triple DES 168]
"Enabled"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SecurityProviders\Schannel\Protocols\TLS 1.0\Server]
"Enabled"=dword:00000000