We use a third party certificate for OWA. The certificate expired in December and has been renewed and installed on our Exchange server. Within IIS on Exchange, it shows that the certificate is valid and expires in 12/2008. When users access OWA, it prompts them saying the certificate is expired. I discovered that in our ISA (2004 Standard) the listener we have for OWA is pointing to the expired certificate. When I try to modify the properties of the listener and go to the Prefrences tab, then click on Select to choose the certificate, only the old one shows up. I copied the new one from the Exchange server and installed/imported it on the ISA server. It says the import was successfull and shows up in the certificate manager. But when I try to change it in the listener, it still only shows the old cert as being available. So my question is, how do I get it to recognize the new certificate? Thanks!