One of your on-premises Federation Service certificates is expiring. Failure to renew the certificate and update trust properties within 13 days will result in a loss of access to all Office 365 services for all users. Update now



Follow the articles below in that order.

1. - On the On-Prem ADFS server, Scenario 1, only PS Commands

 Add-PSSnapin Microsoft.Adfs.Powershell
 Update-ADFSCertificate -CertificateType: Token-Signing


2. - Run the commands in this article.