explanation: after a lot of research into ssl, I found the source of the problem in my case to be a mismatch in root certificate. I'm using Let's Encrypt certificate and the certificate chain which is served by the server differs from the actual chain used in the client (e.g. when ...
Run Wireshark on the workstation where the user having issues with the Application Access the site directly which will work Look at each instance of an SSL handshake in the trace - hopefully, there will not be too many 'tls.handshake.extension.type == 0' filter will give each client hello...