I am using VS2015 and I am trying to run a website application, but every time I run the project I can't load the IISExpress because it says that the port 80 is in use, I run the Tcpview.exe from SysInternals to see who was using the port, but seems not to be in use. I found some related threads saying that can be a problem with the antivirus, I am using Symantec.
Here are the properties of the project, as you can see I tried to change the port manually, but it didn't worked
See the picture below