Why does the program detect that port 80 is occupied?

Question

Prompt that port 80 of the program is occupied

Answer 1

http://www.cnblogs.com/hurry-up/p/6599196.html

Look at this

Answer 2

Check the process, find port 80, and close it.

Answer 3

It is occupied. For windows, it is usually because iis is turned on. Just close iis.