There are 2 options:
1. Start again the the installation process and use ports that are not being used.
To do this:
1.1) Go to the server where you are getting the issue
1.2) Open a Command Prompt Window and run: netstat -ano | findstr "Port Number" (Example: netstat -ano | findstr "8080")
The command above will list at least one row with the 8080 port number
1.3) Go to task manager and locate the process that is running and using the same port number (example: javaw.exe) and kill if necessary. If it's another application, then you would need to configure the other application to use another port number to avoid port conflicts again. If the application is Service Desk Manager, see:
2. Stop the process that is using 8080 port and then re-run the installer and ensure the ports set are not being used.