Port 80 is busy, how to free it?

Question

open server

Hello, when launching open server, it gives an error that It is
impossible to occupy port 80 because it is already in use: Windows services

picture

Here I found that the system is busy
. I tried to disable the antivirus, it did not help, checking port 80 in the antivirus is also disabled
. IIS services are disabled. Who will suggest a solution?

Answer 1

What program in Windows 10 uses port 80?

Answer 2

You can try to limit the open server so that it only runs on ipv4.

Answer 3

Set port 3000