Unable to start debugging on the web server. Debugging failed because integrated Windows authentication is not enabled

Recently, I was trying to get a .Net 2.0 web application I am working on, running from IIS 7 under my Vista Ultimate workstation so it could be remotely debugged. I went and changed the appropriate project settings, but when ran the web app, it said:

Error while trying to run project: Unable to start debugging on the
web server. Debugging failed because integrated Windows authentication
is not enabled.

After some poking arround in IIS 7, which I am quite unfamiliar with, I found a very easy solution.

  1. Right-click on “My Computer” and select “Manage”
  2. Under “Services and Appliccations” select “Internet Information Services”
  3. Find the appropriate website (probably called “Default Web Site”)
  4. Find the icon named “Authentication” and double-click it.
  5. Make sure “Windows Authentication” is in the list, and enable it.

Your Visual Studio should now works as advertised.

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