How can I check if the port is occupied by that program?

Start the applicationProgramThe required port has been occupied and the startup fails. How can I check that the application occupies this port? You can use netstat in the command line to View Details:

Netstat-a-n indicates port usage
Netstat-ano displays the port occupation and process PID

Start -- run -- cmd OK or press enter to enter the Command Prompt window. Type netstat-ano to view the port usage and PID of all connections, find the program corresponding to the PID in the task manager. If the PID is not found in the task manager, you can select "View"-"Select column"-"PID" in the task manager and check it.

You can also use the following method to determine that the program occupies the Port:

Enter the command prompt and type netstat-Aon | findstr "3306" (for example, I want to check that port 3306 is occupied by that application)

C: \ Documents ents and Settings \ Administrator> netstat-Aon | findstr "3306"
TCP 0.0.0.0: 3306 0.0.0.0: 0 listening 252

C: \ Documents ents and Settings \ Administrator> tasklist | findstr "252"
Mysqld. EXE 252 console 0 4,820 K

It can be seen that MySQL occupies port 3306.