In some cases, you might run into an issue opening Control Cockpit in which an Apache server window opens in its place.

The issue is due to Apache and Control Cockpit sharing the same access port (443.)

There are two options that can be explored:

1.  Adapt the Apache server configuration to use a different port than 443.

2.  Adapt the Control Cockpit configuration to use a different port.  This can be done by reinstalling the Cockpit and use any free port - for example, 8443.

After reinstalling and defining a new web application port, you should have access to the Control Cockpit.