Whenever i attempt to make a test server for my game it returns an error on the server saying
18:57:29.080 - Error while starting server: Failed to start network server, port:53640, error id:5
For the rest of my players theyre getting kicked out with error code 17
Anyone knows why? Need help!

2 comments
The most likely cause of this is that your firewall is blocking some rules for Roblox that it needs in order to start up a local server. Open your firewall and make sure nothing from Roblox is being blocked.
Have you tried restarting your computer?