Microsoft Announces Big Changes for On-Premises Exchange Server

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This Week in IT, I cover everything you need to know about Microsoft’s new edition of Exchange Server, which is due to launch in 2025. Exchange Server will follow a similar path to on-premises SharePoint and the new edition will also bring with it some new features.

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Microsoft announces new subscription edition of Exchange Server: The next edition of Exchange Server, which will launch in Q3 2025, will follow the same licensing model as SharePoint Server SE, requiring a subscription or Software Assurance.

Exchange Server SE will be based on Exchange Server 2019 CU15: The new edition will have the same code base as the last cumulative update for Exchange Server 2019, but with some minor changes to account for the subscription model and the support for Windows Server 2025.

Exchange Server SE will have some new features and deprecations: The first cumulative update for Exchange Server SE will add support for Kerberos for server-to-server communication, an admin API, and remove Outlook anywhere and coexistence with earlier versions of Exchange.

Exchange Server SE will be available from the Microsoft Admin Center: Users will be able to download the new edition from the Admin Center. Microsoft will also provide a free hybrid server license and key for Exchange Server SE.

Exchange Server SE pricing and compatibility are not yet known: Microsoft has not revealed the pricing for the subscription edition of Exchange Server, nor the compatibility with other on-premises server products like Windows Server. Users will need to buy new licenses for Exchange Server SE, as the existing ones for Exchange Server 2019 will not be supported.

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