An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode.

If you get the error:

HTTP Error 500.22 - Internal Server Error

An ASP.NET setting has been detected that does not apply in Integrated managed pipeline mode.

Looks like you upgraded recently your project to a newer version.
To solve this problem, follow the next steps:
* In Visual Studio, select your web project
* In the properties section set the Managed Pipeline Mode to Classic
* Compile and re-run the web application