Our client have recently upgrade the security protocol to TLS 1.2. Therefore We have our application upgraded to 4.6.1 expecting the security protocol will be default to TLS
I used this in my code on the initial page. The app is web forms in VB.NET with .NET Framework 4.6.1
System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12