Unable to connect to Web Developers built in web server

Question

When I yesterday returned to Visual Web Developer I was no longer able to run/debug my projects. Clicking the green play button launches ASP.NET Development Server (and it shows up in the systray) but the browser only shows the error message "Firefox is not able to connect to localhost:58127" (translated from Swedish). IE7 says "Cannot show web page".

I cannot figure out why this happens. It worked a couple of weeks back. Could there be a Windows setting that mess things up? (I've tried to disable the firewall without any change.)

Answer 1

Are you perhaps using NOD32 or any other antivirus that may cause problems?

Answer 2

Are you using Vista? I've had the same issues with recent Vista updates.

Firstly, make sure Visual Studio is running "As Administrator".

Secondly, when the browser launches, replace "http://localhost:" with "http://127.0.0.1:". If that works, then its because a Windows Update messed up your hosts file.

If this is the case, make sure you hosts file has this line in it, uncommented: "127.0.0.1 localhost"

my hosts file is in this directory: "C:\Windows\System32\drivers\etc"

yours will be something similar to that.

Answer 3

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