Unable to Display URL If you are experiencing the "Unable to Display URL:" error when opening a report, upgrade to the latest Internet Explorer MapGuide Viewer plug-in. If that doesn't work, please follow the directions below: (This error only applies to the Internet Explorer browser. No known error when using the Netscape browser.) Typical "Unable to Display URL:" error. From your Internet Explorer browser Tools menu, select Internet Options... Click Security tab. Click Trusted sites icon. Click Sites button. Deselect the check mark from "Require server verification (https:) for all sites in this zone" check box. Add NavigateLA intranet/internet address as shown. Click OK button to finish. Close your browser completely. You should now be able to view a report without the error.