The Active Directory Federations Services (ADFS) token signing certificate is due to expire and will be replaced.
Applications that are integrated utilizing ADFS will not trust new user authentications from ADFS until the applications are updated to trust the new certificate. Users that have already authenticated will not be affected. Office 365 & IET uInform applications will be updated to trust the new certificate as soon as it is updated, there is an expected down time of 5-10 minutes for these applications. All other applications will trust the new certificate when the application owners or third party vendors update the certificate trust.
COE Media Site
SOE Intranet Web Site
IT Express Service Desk