ASP.NET Core 3.0 app not working on Windows Server 2012 R2 due to ERR_HTTP2_INADEQUATE_TRANSPORT_SECURITY
问题 I took a working ASP.NET Core 2.2 app, upgraded it to 3.0 and suddenly the app no longer works in Windows Server 2012. It comes up with the following: ERR_HTTP2_INADEQUATE_TRANSPORT_SECURITY Chrome: Firefox: It seems that before I had to opt into HTTP/2 and now its the default along with HTTP1.1. There is a post here https://github.com/aspnet/AspNetCore/issues/14350 but that is totally confusing with no real solution. I have tried all sorts of enabling / disabling insecure protocols but to no