Whenever we create any virtual directory from plesk it gets created successfully, But when we try to access, we get the following error. Server Application Unavailable The web application you are attempting to access on this web server is currently unavailable. Please hit the "Refresh" button in your web browser to retry your request. Administrator Note: An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur. And we do not get any trace. What is wrong about there, as the error does not come into the event viewer? To make this working, we need to remove the virtual directory from the panel and create from IIS. Is there any workout for this or this is known bug?