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

/////////////// Solution

It's due to the application render under the "Integrated Mode" witch is directly related to the IIS service.

Solution-
Step 1. Right Click on the Solution Explorer of the application
Step 2. Go to Properties of F4
Step 3. Change the PIPELINE setting "Integrated to Classic Mode"

Solution>> Right Click>> Property (F4) >> Managed Pipeline Mode >> Classic