I have used my VPN connection on previous version of Windows 10 successfully. But after upgrading to current latest update which is 2004 my VPN connection disconnects right after connecting.
I have to login to my account in order to have access to internet after connecting to this VPN and I think this causes the problem, because Windows thinks there is not internet connection and automatically disconnects VPN (My be I am wrong).
I searched the internet how to keep my VPN connection alive but no successful solution found. for example this blog post suggests having a script to check if connection is lost and connect again.
And some details about my VPN that may be helpful:
