Tips

Kill Port 

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

Mysql

Grant Privilege

grant all privileges on *.* to root@localhost identified by root

View opened connection in MySql

show processlist