WebApplication written in Asp.Net C# 4.5.1 is working fine for TLS1.0 and TLS 1.1. But since 1.0 and 1.1 have been disabled and TLS 1.2 is enabled the app have an issue when making calls to the Exum Service "https://connect.boomi.com/ws/rest/exum". The error details is as: Error details:System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. ---> System.ComponentModel.Win32Exception: The client and server cannot communicate, because they do not possess a common algorithm .
I tried by adding the code in global.asax ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12; but no luck.
Can anyone advise on this case please.