I have created a Blazor Server side Application which is working perfectly fine when accessed on a Win 2012 Server in our old Domain, no matter in which Browser.
If I host it on a Win 2019 Server in the new Domain though, it's only working in Internet Explorer. Edge displays the ERR_CONNECTION_RESET error. I did both of my tests from the same client which is located in the old Domain.
If I try to open it in Edge directly on the new Server, I receive another error: ERR_CONNECTION_CLOSED.
On both Servers it is running on Port 5001 (HTTPS)
Our Firewall department can't find any errors in the Logfiles. Hope you guys have got an idea what might help.