Most RecentMost ViewedMost LikesReleased: 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. 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. Released: August 2025 Exchange Server Security Updates We have released Security Updates for Exchange Server SE, Exchange Server 2019 and Exchange Server 2016. Released: April 2025 Exchange Server Hotfix Updates We have released Hotfix Updates for Exchange Server 2016 and Exchange Server 2019. Released: May 2025 Exchange Server Hotfix Updates We have released Hotfix Updates for Exchange Server 2016 and Exchange Server 2019. Why “in-place upgrade” from Exchange 2019 to Exchange SE is low risk We wanted to share information on why we view the "in-place upgrade" to Exchange SE (when available) as a "low risk" operation. Directory Based Edge Blocking Now Available for Public Folders & Dynamic Distribution Groups Announcing the availability of Directory-Based Edge Blocking feature for mail enabled public folders (MEPF) and dynamic distribution groups (DDG). Decommissioning Exchange Server 2016 This article will help you decommission Exchange Server 2016 from your organization. Released: 2025 H1 Cumulative Update for Exchange Server Today we are announcing the availability of the 2025 H1 Cumulative Update (CU) for Exchange Server 2019 (aka CU15).
