I am trying to figure out why all of a sudden, with in the last 2 weeks or so that any of our code that used Microsoft.Sharepoint.Client CSOM to do SP stuff is now failing with the generic "the underlying connection was closed....."
We are using the newest version of ASP.Net with C#. Whatever the newest version of the DLLs are from NuGet.
Problem only happens on our windows 2012 R2 servers. If I run the code from my local machine it always works. TLS 1.2 is enabled in the registry for both client and server.
How do I resolve them?
