IIS express not working in visual studio 2012

Question

Iam not able to run the Visual Studio Application with IIS Express. Iam getting an Error “Unable to launch IIS Express” for the first time. After multiple times debugging, I

Answer 1

I had the same problem and the problem is related to the app pool definition which you can find in \users{your username}\mydocuments\IISexpress\config\applicationhost.config.

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and change the managedruntimeversion from "v4.0" to "v4.0.30319" for .net 4.5