Cause: The OutSystems Platform Community Edition needs ports 80 and 443 to be bound to its services. Common services running on this ports are Apache (httpd.exe) and Skype.
Resolution: Change the ports used by those services or install the OutSystems Platform Community Edition on a “clean” install of a Windows machine.
*For detailed information about troubleshooting your installation please follow this links: how to start troubleshooting, log files, common error codes.