2. Check the usage of specific ports: Take port 80 as an example, enter the command "netstat-aon | findstr" 80, and press enter as shown below. It can be seen that the PID number of the program occupying port 80 is 2320:

3. Find the corresponding program according to the PID number: continue to input the command "task list | findstr”2448", and enter is shown as follows. It can be seen that the program corresponding to 2320 is 360tray, which also shows that the program is using port 80:

4. If port 80 is not occupied, you need to end the corresponding process in the task manager. Press the shortcut key "Ctrl+Shift+Esc" to call up the Windows task manager, find "360tray", and click the end process below!