Delete expired security certificate
Posted on 2014-11-27
Outlook 2013 throws up the security warning box shortly after starting, when I view the certificate it shows it expired some time ago. I have a new self-signed certificate package which I’ve run on the machine and reports as being successfully installed, but Outlook isn’t using the new certificate.
I can’t find the old certificate in Internet Options > Content > Certificates. I can find two that have an expiry date of next year and so should be OK, but not the certificate with the expired date.
How do I make Outlook use the new certificate?