Unable to open debugger port in IntelliJ IDEA

Question

I have a problem that I can not set up my application in debug mode with IntelliJ IDE, but run mode is OK.

My OS is Windows 7, IDE is IntelliJ IDEA, web container is Tom

Answer 1

While debug I got this issue: It worked with

1. tried changing my Tomcat http port 8082 to 8083(In debug configurations on IntelliJ and in Tomcat->conf->server.xml also)
2. tried changing JMX port from 1099 to 1009.
3. tried changing debug port in Startup/Connection in debug configurations
4. killed all java processes in TaskManager->Processes.