Cognos Controller 10.4.2
Microsoft Windows 2019 server
At new installation, i after selection of database, in cognos controller client, are then stuck.
No more information.
The cognos controller client uses port 80 to talk to the cognos controller server, but after the selection of database, it will if SSO is active, connect to Cognos BI to validate the user.
This happens on the port listed in Cognos Controller Configuration as Report Server.
If this is port 9300, then port 9300 need to be open in firewall between server and client. This is not the normal case.
You should instead change the Cognos Controller Configuration for Report server to use port 80.
Wrong line at report server:
Correct line at report server: