I updated my comodo firewall and as part of the upgrade it included Google Chrome Browser (I missed it and it installed) When I removed it, the hyperlinks in outlook wouldn't work anymore. Other web research indicates a problem with Google Chrome and to fix your outlook links you have to re-install Google chrome. Quit packaging it with your updates - lots of people are experiencing this problem.
The message you get when you click a link is "The operation has been canceled due to restrictions in effect on this computer. Contact your system administrator"