Why Port 80 is Being Used by System Process ID 4, What’s going on with your Windows Machine ?

by windowsiso on September 14, 2012

Last week we’ve showed you a neat tool to kick start your web development. While Web Matrix 2 is great for all purpose web development and deployment, there are hidden gems that comes with it that you might not have noticed. Web Matrix uses Microsoft’s IIS as web server, it’s an alternative to the popular apache server. By installing Web Matrix 2, you are actually installing many dependency software than just the Web Matrix 2 alone, that includes a services, called “MsDepSvc” (Web Development Agent Service). It runs IIS in the background as a services and believe it or not, by default it occupies port 80.

Do a quick netstat

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