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How do I fix Class Not Registered error message without losing my bookmarks?

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Whenever I try to click on a link in my Microsoft Outlook 2010 email, I get a "Class Not Registered" error message? How do I fix this without losing all the bookmarks I've accumulated over the years?

Whenever I try to click on a link in my Microsoft Outlook 2010 email, I get a "Class Not Registered" error message? How do I fix this without losing all the bookmarks I've accumulated over the years?

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What kind of link it that (what file extension does it have)?

This usually means that you do not have an application set on Windows to handle this file type.