• 1000 чтобы изменить протокол безопасности GLobal_asax application_start для:
System.Net.ServicePointManager.SecurityProtocol = CType(3072, System.Net.SecurityProtocolType)
System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12
If System.Net.ServicePointManager.SecurityProtocol = (SecurityProtocolType.Ssl3 Or SecurityProtocolType.Tls) Then
System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls Or SecurityProtocolType.Tls11 Or SecurityProtocolType.Tls12
System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12
Все это вернуло тот же результат
Я использую iis 8.5, windows server 2012