Error when redirect page

Question

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.

Source Error:

Line 37:             ASP.NET to identify an incoming user.  Line 38:         --> Line 39: 		<authentication mode="Windows"/> Line 40: 		<!-- Line 41:             The <customErrors> section enables configuration