How to fix Error: “Navigation Cancelled (due to unknown reason”
Follow the instructions to fix Error: “Navigation Cancelled (due to unknown reason)”:
Try to view the web page at a later time.
To continue browsing, click the Back button on the toolbar to navigate to a new site, or type a new URL and press ‘Enter’.
After you install security update 961260 (MS09-002) on a computer that is running Windows Vista or Windows Server 2008, you may experience a problem when you visit some web pages that are in different Internet Explorer security zones. When the problem occurs, you receive a message “Navigation to the webpage was canceled”.