<div sizcache="5" sizset="0"> Hello, Application was working fine but suddenly getting below mentioned error in intermittently, please help me to resolve the error. Thanks in advance. Server Error in '/' Application. <div align="center"> </div> 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: