I have the same problem. Since I upgraded to the newest version, clicking on any hyperlink or buttons like in Outlook will not open a browser window like it used to. I went through and made sure Iron is set as default browser and a bunch of other things. I happened to have an old installation file for iron (release: 29:1600:1:0) I uninstalled the newest version and installed this one. I was able to click on links and other buttons and it would open as it should. This version however would not save my passwords like it used too, so i upgraded to the newest version again and now I'm back to no browser opening when clicking on hyperlinks. Does anyone have any suggestions as to how I can get this feature back?