The error “Port already in use” occurs when all the Denodo Servers were not shut down properly before configuring SSL for Solution Manager.
In order to identify the root cause and resolve the issue, I would follow the below steps,
* Stop all Denodo Servers using the Denodo Solution Manager Control Center and Denodo Platform Control Center. (There are possibilities to have more than one Denodo Platform installed on a machine, hence check for all the servers to get stopped.)
* Check if there are any Denodo Services running as a windows service, which starts automatically whenever the machine starts. If so, stop the running services.
* Check if the Web container Port is occupied by any of the applications. If yes, stop them.
* Finally, restart all Denodo servers and the operating system to avoid the port conflicts and usage.
Then try to turn on the Solution Manager server, License Manager server and at last the Solution Manager Administration Tool.
If the issue persists, I would check the ***solution-manager-web-tool.log*** file to get more information on the error.
Also, if you have an active support account, you could open a [support ticket](https://support.denodo.com/) for further assistance.
To know more about the ports used by Denodo Solution Manager, you could refer to the [Default Ports Used by the Solution Manager Modules](https://community.denodo.com/docs/html/browse/8.0/en/solution_manager/installation/appendix/default_ports_used_by_the_solution_manager_modules/default_ports_used_by_the_solution_manager_modules#default-ports-used-by-the-solution-manager-modules) section of Solution Manager Installation Guide.
Hope this helps!