The solution to the problem that port 80 is occupied by the system when the wampapache of the php wamp server is started.

1. After installing wamp and starting it, the icon is red:

2. Start the service (left-click on the icon corresponding to the status bar):

3. After starting, the icon turns orange. Move the mouse up, and it will prompt that only one of the two services has been started successfully:

4. Right-click on the icon->Tools->Test port 80:

5. The following results were obtained:

6. It was found that the System service with PID 4 occupied the port, and the process could not be ended by opening the task manager:

7. At this time, the problem comes. It has reached a very critical point. It is impossible to know what the "System" service is? It is useless to go to the control panel to manually start the service. The following error pops up:

8. After many painful searches, I accidentally found that it was occupied by SQL Server Reporting Services (MSSQLSERVER) Port 80:

9. Stop this service; open the wampapache service, start successfully, the icon turns green, and run normally:

The above introduces the solution to the problem that port 80 is occupied by the system when the wampapache of the PHP wamp server is started, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.