Deployment error:Starting of Tomcat failed, the server port 8080 is already in use?

Take a look on your running processes, it seems like your current Tomcat instance did not stop. It's still running and NetBeans tries to start a second Tomcat-instance. Thats the reason for your exception, you just have to stop the first instance, or deploy you code on the current running one.

Or file an issue with the nb developers so this can get properly resolved for you and anyone else that may have run into this issue. – vkraemer Mar 16 at 4:43.

Goto command prompt netstat -aon it will show you something like TCP 192.1.200.48:2053 24.43.246.60:443 ESTABLISHED 248 TCP 192.1.200.48:2055 24.43.246.60:443 ESTABLISHED 248 TCP 192.1.200.48:2126 213.146.189.201:12350 ESTABLISHED 1308 TCP 192.1.200.48:3918 192.1.200.2:8073 ESTABLISHED 1504 TCP 192.1.200.48:3975 192.1.200.11:49892 TIME_WAIT 0 TCP 192.1.200.48:3976 192.1.200.11:49892 TIME_WAIT 0 TCP 192.1.200.48:4039 209.85.153.100:80 ESTABLISHED 248 TCP 192.1.200.48:8080 209.85.153.100:80 ESTABLISHED 248 check which process has binded your port. Here in above example its 248 now if you are sure that you need to kill that process fire Linux: kill -9 248 Windows: taskkill /f /pid 248 it will kill that process.

I had the same problem when trying to deploy, tomcat failed to restart as Tomcat instance was running. Close the IDE and check TASk Manager - kill any javaw process running, that solved the problem for me.

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