Tomcat Debug Error: Unable to open debugger port (127.0.0.1:63199): java.net.BindException "Address already in use: NET_Bind"
Solution 1:
As for me,the problem begin when i use idea to debug my web application. Then i find where the port configured and change to another port.
Solution 2:
this link might be helpful
net stop winnat
launch your idea tomcat
net start winnat