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I am developing an ASP.Net MVC 4 website on VS 2012 which runs on IIS Express. While running my website locally, I would like to see data.xyz.com instead of localhost/Data in the browser address bar.
I have followed few other questions on SO, mainly this one. But when I run the project, it says Unable to launch the IIS Express Web server.Port '80' is in use.

So for time being, I am using port 8080 to get it to work, which I dont want to. How do I fix this?

Update: More info:
netstat data on port 80

TCP    0.0.0.0:80             0.0.0.0:0              LISTENING
TCP    [::]:80                [::]:0                 LISTENING

Can not obtain ownership information for either of the processes.

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  • Does this help?: stackoverflow.com/questions/4709014/… Commented Mar 18, 2013 at 6:52
  • Thats the one I linked in my question. But couldn't go further as I was getting port 80 in use error message. Commented Mar 18, 2013 at 21:31
  • Ah sorry missed the link when I first read that. Commented Mar 18, 2013 at 22:50

2 Answers 2

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It was SSRS which was listening on port 80. Had to turn off that process to run my app on port 80.

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You should find who is using port 80, I guess you also have full IIS installed? Try to just open http://localhost:80 and see who will respond on this request.

4 Comments

Check Skype, from some version it started to use 80 and 443 ports for incoming connection. Tools->Options->Advanced->Connection.
I get the same error after I changed port numbers and even after quitting it.
btw, you can run "netstat -o" to see who is using your 80 / 443 ports.
@outcoldman Thanks for the Skype hint. This error was killing me and Skype was the knife.

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