window’s IIS server default port is also 80,
and Wamp’s apache (httpd) default port It is also 80,
Whenever Wamp fails to open due to port conflict, causing the icon in the lower right corner of Wamp to be yellow (green when it is normally opened),
You can change the port number of apache (httpd) That's it.
The specific solution is as shown in the figure:
is replaced with:
Then restart the Wamp service, or Wamp itself is fine