Record a strange win7 system port 80 is occupied and solve the problem

A few months ago, I built a Tomcat, the port was changed to 80, and a Shibboleth was deployed. Yesterday, a few months later, I found that the Tomcat could not be started, and the port was reported to be occupied, so I was puzzled. .

I ran netstat -ano and was stunned that port 80 was occupied by the process with PID 4

and then I. . . Right-click to close the System process tree, and the system is not unexpectedly Huaping =. =

There are many posts on the Internet, but there are too many reprints in China. Most of the same content is summarized from the following link:

http://stackoverflow.com/questions/1430141/port-80-is-being-used-by-system- pid-4-what-is-that

I don't have SqlServer installed on my computer, and I didn't see the two services, the Web Deployment Agent Service or the World Wide Web Publishing

service . The
net stop http command I used later was also mentioned in the above link. I

found that there are many services that depend on this. The most important thing is that these services are possible to start automatically , that is to say, when you turn off Ya Ya and restart port 80, it is occupied again.

Finally found that there is a service named "BranchCache" that always Restart, although I set it to manual, it is still useless, and then directly disable this service, port 80 is successfully released. .