This error appears when attempting to view a Web page created using Visual Studio. If the Location is something like file:///C:/inetpub/wwwroot/stage.aspx, this means the Web page is not being served by a Web server. Instead, you are loading the page locally. The address bar of the Web browser probably is something like file:///C:/inetpub/wwwroot/stage.aspx.To resolve this issue, you simply need to adjust the URL to point to the Web server. As an example, you might go to http://www.example.com/stage.aspx.