Most RecentMost ViewedMost LikesLimiting 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. Hybrid Configuration Wizard with granular configuration feature is now available Today, we are happy to announce the latest release of Hybrid Configuration Wizard (HCW). Released: November 2022 Exchange Server Security Updates We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019. 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). No Exchange Server Security Updates for November 2025 We are not releasing any Exchange Server Security Updates for November 2025 Released: March 2023 Exchange Server Security Updates We have released Security Updates for Exchange Server 2013, Exchange Server 2016, and Exchange Server 2019. 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. Released: 2023 H1 Cumulative Update for Exchange Server Today we are announcing the availability of Cumulative Update for Exchange Server 2019. Released: February 2023 Exchange Server Security Updates We are releasing a set of security updates for Exchange Server 2013, 2016 and 2019. Released: October 2025 Exchange Server Security Updates We have released Security Updates for Exchange Server SE, Exchange Server 2019 and Exchange Server 2016.
