Most RecentMost ViewedMost LikesReleased: October 2025 Exchange Server Security Updates We have released Security Updates for Exchange Server SE, Exchange Server 2019 and Exchange Server 2016. Support for Exchange Server 2016 and Exchange Server 2019 ends today Support for Exchange Server 2016 and Exchange Server 2019 ends today. Auto-Archiving for Exchange Online We are happy to announce the time-based archiving feature for Exchange Online users with archives. Active Directory schema extension issue if you use a Windows Server 2025 schema master role We wanted to let you know of an Active Directory replication issue you might run into if you use Windows Server 2025 schema master role. Dedicated Hybrid App: temporary enforcements, new HCW and possible hybrid functionality disruptions We are announcing enforcements to move customers along to using the dedicated hybrid app. Exchange Online ActiveSync Certificate-based Authentication endpoint changes We wanted to let you know about Exchange Online ActiveSync Certificate-based Authentication endpoint changes. Exchange Online Message Recall Updates We’re pleased to announce several more updates and improvements to Exchange Online message recall feature. Updates to Get-Contact and Set-Contact Cmdlets for “Contacts” Recipient Type in Exchange Online We will make a change to management of "Contact" Recipient Type objects in Exchange Online. Announcing Exchange 2016 / 2019 Extended Security Update program We are announcing an optional 6-month Extended Security Update (ESU) program for Exchange 2016 and 2019. Native external sender callouts on email in Outlook We know that some of our customers leverage Exchange transport rules to prepend subject line or insert the message body to show the email is from external senders. This approach has a few limitations, so we are working on native functionality.
