Issue
When clicking external links in a course using the Internet Explorer (IE) version 8 web browser, you may be given a Microsoft prompt asking about accessing secure contgent or you may be taken to a “Cannot navigate to page” screen. (Note: this issue does not affect other browsers)
Solution
One option is to use another browser such as Mozilla Firefox (http://www.mozilla.com/).
Otherwise, at the dialog box when you click on an external link in IE 8, you are give two separate choices. If you click "YES" on this link then you get the problem navigating to the page. If you click "NO" the page will load as intended. If you click "YES", this will remain with you throughout your session. If that happens, close the browser and restart your session and it will prompt you again.
A permanent solution is to click on “Tools”, within IE menu structure, then “Internet Options”. A screen will come up with multiple tabs, click on the “Security” tab. Click on “Custom level” then scroll to “Display mixed content” under Miscellaneous and check”Enable” then click “OK”. (Please note: This option will not be maintained on public machines.) This option will allow you to view both secured and unsecured content within the IE 8 browser.