Unable to open debugger port in IntelliJ

Question

Unable to open debugger port in intellij. The port number 9009 matches the one which has been set in the configuration file for the application.

Answer 1

I had the same problem and this solution also did the trick for me: Provide the IP 127.0.0.1 in the Intellij Debug configuration instead of the host name "localhost", in case you're using this hostname.