Question : Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive

Experts,

The setup is Windows 2008 64 bit IIS7.  The site has been created in VS2010 beta with .net framework 4.  I have installed framework 4 and set the site to use ASP.NET 4.  I have also restarted WWW services but still get this.

There error I get is...

Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive

Answer : Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive

Since .NET 4.0 is at beta stage, the version of .NET 4.0 of your application build and server version might be different. Just check it.

The latest version is 4.0.21006.1 (4.0 Beta 2)

Also refer this link: http://forums.asp.net/t/1491204.aspx