We have an older Windows 2008 server that is scheduled for replacement in a few months. There is a certificate that has expired on 6/16/2016. When end users open Outlook they receive a pop-up with the expired certificate requiring attention even though they are now using MS Office 365 for email hosting. The server is a domain controller with Active Directory and File Sharing that is no longer running Exchange.
Is there a specific service that can be disabled to stop the expired certificate issue?
Any recommendations are appreciated.