Microsoft Urges Upgrade: Exchange 2016 & 2019 Face End-of-Support Apocalypse!
Microsoft reminds admins that Exchange 2016 and 2019 will reach end of support in October 2025. They advise upgrading to Exchange Online or preparing for Exchange Server Subscription Edition. It’s time to swap those outdated servers before they become the digital equivalent of a rotary phone.

Hot Take:
Looks like Microsoft is playing a game of musical chairs with their Exchange Servers, and if you’re still sitting on Exchange 2016 or 2019 by October 2025, you’re gonna be doing the tango with security vulnerabilities. It’s time to upgrade or face the music!
Key Points:
- Exchange 2016 and 2019 will reach end of support on October 14, 2025.
- After this date, no technical support or security updates will be provided.
- Microsoft advises migrating to Exchange Online or upgrading to Exchange Server SE.
- Exchange Server SE will support in-place upgrades from Exchange Server 2019.
- Guidance for migration and upgrade paths is available on Microsoft’s documentation site.
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