I have a client site that were forced to upgrade from Office 2003 and Windows 7 to Office 2010 and Windows 10. They are connected to an older server running SBS 2011. I am getting the security alert that the security certificate has expired for their domain name whe starting Outlook 2010 and I cannot get it stop with the error message. We have not needed a certificate in years until we went to Outlook 2010. Is there anyway to disable the message at the workstation level?