When installing confluence I set the listen port to 8096 because jira was already set up on 8090. When I closed the installer my browser poped up with a page not found message.
I later attempted to open jira and the confluence startup page was visible.
- Install Confluence 5.6.0 and configure a custom port
- Upgrade to 5.6.1 using the installer, and confirm that the port is preserved
- Upgrade to 5.6.5 and confirm that the port is now back to the default of 8090 in the server.xml
Edit the server.xml and correct the port number. You can find the old port number in the server.xml in the installation directory backup created by the installer.