Okay. So, I have asp.net project (webform1.aspx), which I want to upload on my web site. But, when I uploaded and tried to access it from web (http://mywebsite/projectname/webform1.aspx), it gives an error. (it works fine when I do - http://localhost/projectname/webform1.aspx). The error is: Server Error in '/' application 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 38: --> Line 39: Line 40: <authentication mode="Windows" /> <---- HERE!!!! Line 41: Line 42: How do I fix it so I can view the aspx on my website? Please help, I have been tryin to solve this for days.. still no success... Please explain in DETAILS, I am just a beginner.. Thanx alot! PS: I have created a virtual folder on IIS and stored my project in it.