Recent Blog ArticlesNewest TopicsMost LikesTagged:TagRetirement Date for Office Online Server (OOS) has been Announced Office Online Server retirement date has been Announced. Cloud-Managed Remote Mailboxes: Now Generally Available! We are happy to announce General Availability of cloud-managed Remote Mailboxes. Released: 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. Exchange Online ActiveSync Certificate-based Authentication endpoint changes We wanted to let you know about Exchange Online ActiveSync Certificate-based Authentication endpoint changes. Auto-Archiving for Exchange Online We are happy to announce the time-based archiving feature for Exchange Online users with archives. 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. The first temporary enforcement of dedicated hybrid app use is coming on September 16 A reminder that on September 16 2025, we will enforce the first temporary block of shared security principal use for our hybrid customers. Released: September 2025 Exchange Server Hotfix Updates We have released Hotfix Updates for Exchange Server Subscription Edition (SE), 2019 and 2016. Limiting Onmicrosoft Domain Usage for Sending Emails We are announcing that all Exchange Online customers who send external email should start switching to custom (aka vanity) domain names.
