HTTP Error 500.23

1. This error 500.23 translates to - An ASP.NET httpHandlers configuration does not apply in Managed Pipeline mode.

   Check the httpHandlers configuration in IIS. Try following:

   1. Open Server Manager
   2. Select Roles>Web Server (IIS)>IIS Manager>Select the Server>Applocation Pools
   3. Select the appPool that your asp.net app is running under>Click on 'Advanced Settings' from the right hand pane.
   4. Under Advanced Settings>General>Managed Pipeline Mode, select "Classic"
   5. Recycle app pool and test your app.