All users have Outlook 2013 as the email client. All users Outlook work as expected. One user has the following problem. Whenever the Security Alert pop-up appears, she would click either "yes" or "no" or "view certificate" or even click on the "x" to close the pop-up, the user's Outlook crashes and then restarts again. I checked for viruses and the machine is clean. I uninstalled Office 2013 and reinstalled it and the problem persists. Please see screen shot of the "Security Alert". Any advice on this is appreciated.