In windows, how does one view port usage?

In windows, how does one view port usage?
Start -- run -- cmd enter the command prompt and enter netstat-ano. Then you can see all connected PIDs and find the program corresponding to the PID in the task manager. If no PID exists in the task manager, you can select "View"-"Select column" in the task manager. when starting the application, we find that the ports required by the system are occupied by other programs, how to know who owns the port we need is a headache for many people. The following describes a very simple method, I hope it will be useful to everyone. If we need to determine who occupies port 9050, 1. For Windows, execute in windows command line window: 1. check the usage of all ports. C: \> netstat-ano protocol local address external address status pid tcp 127.0.0.1: 1434 0.0.0.0: 0 LISTENING 3236 TCP 127.0.0.1: 5679 0.0.0.0: 0 LISTENING 4168 TCP 127.0.0.1: 7438 0.0.0. 0: 0 LISTENING 4168 TCP 127.0.0.1: 8015 0.0.0.0: 0 LISTENING 1456 TCP 192.168.3.230: 139 0.0.0.0: 0 LISTENING 4 TCP 192.168.3.230: 1957 220.181.31.225: 443 ESTABLISHED 3068 TCP 192.168.3.230: 1522 ESTABLISHED 1456 TCP 192.168.3.230: 2927 117.79.91.18: 80 ESTABLISHED 4732 TCP 192.168.3.230: 2929 117.79.91.18: 80 ESTABLISHED 4732 TCP 192.168.3.230: 2930 Protocol: 80 ESTABLISHED 4732 TCP 19 Listen 3.230: 2931 117.79.91.18: 80 ESTABLISHED 4732 2. view the usage of the specified port C: \> netstat-aon | findstr "9050" protocol local address external address status pid tcp 127.0.0.1: 9050 0.0.0.0: 0 LISTENING 2016 P: see it, the port is occupied by a process with process no. 2016. Execute the following command: (you can also view the pid process in the task manager.) 3. view the PID Process C: \> tasklist | findstr "2016" image name PID session name session # memory usage ================== ====================================== tor.exe 2016 Console 0 16,064 k p: it is clear that the tor occupies your port. 4. End the process C: \> taskkill/f/t/im tor.exe