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How to fix Error: “Navigation Cancelled (due to unknown reason”

This problem occurs if the navigation causes Protected Mode settings to change from On to Off. You can determine which Internet Explorer security zone a web page is in by looking at the status bar at the bottom of the Internet Explorer 7 window.

The solution to the problem

Follow the instructions to fix Error: “Navigation Cancelled (due to unknown reason)”:

  1. 1

    Try to view the web page at a later time.

  2. 2

    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”.

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