While http://office.microsoft.com/en-us/assistance/HA011383961033.aspx gives us no real clues it does admit to me that something is not being told. It's well known that as MS updates the OS and Office that they break old versions. If you want the "why?" you have to ask mother.
Bob
I had an issue in Office where I had a hyperlink pointing to a microsoft site with passport logins...it would have a query string on the end of the URL for a saved page....this would always fail and there was some security issue. I changed my registry value in Office for ForceShellExecute to 1 and it solved the problem...IE is my default browser anyway...so why did this allow my link to work properly? It allowed the passport login to work properly+

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