I have a .NET 3.5 Web application on VS 2008 SP1 running on Vista Ultimate 32 SP1. I created an Application under the Default Web Site. So the url to the app is \"http://localho
I had same problem and solved it. You can try following: navigate to the root folder of your web application and find file that has ".csproj.user" extension ad delete it. Close all instances of Visual Studio and start again. Then hit F5. Otherwise hit CTRL+ALT+P and attach to w3wc.exe process. Hope it helps.