Window7 listens on port 80 without permission?

Question

Windows

It was required to install a program that needs port 80. Stopped IIS. But the port is still busy and gives a 404 error.
In the resource monitor, you can see that when accessing port 80, an ipv6 loopback connection appears without specifying which program began to listen on the port. How to calculate that the port is free. ipv6 is not used. Disabling all network adapters did not work.

Answer 1

Everything turned out to be easier
, you need to stop the Web Deployment Agent Service

Answer 2

Hello - you can do the following:
Run in cmd - netstat -a -o you will see a list of ports - find port 80 and see which PID uses it.
Then run the task manager - and add the PID column to the view - find the corresponding number in the list and you will understand which process is using your port 80 below screenshot

Answer 3

Or in Skype settings uncheck "Use ports 443 and 80"

Answer 4

netstat I checked immediately
Proto Local Address Foreign Address State
TCP 0.0.0.0:80 Alexandr-PC:0 LISTENING
Can not obtain ownership information