Microsoft Exchange 2016 and 2019 Security Updates End in October 2026
Summary
Microsoft says Exchange Server 2016 and 2019 ESU security updates will end in October 2026, with no further extension. It advises administrators to upgrade to Exchange Server Subscription Edition or migrate to Exchange Online.
Key points
- Microsoft will end the Exchange 2016 and 2019 Extended Security Update program in October 2026, with no further extension.
- The servers have already reached end of support; they will receive no further updates after the ESU program ends.
- Microsoft advises upgrading Exchange 2019 in place to Exchange Server Subscription Edition.
- Administrators running Exchange 2016 or 2013 can upgrade directly to Exchange Server SE or install Exchange 2019 first.
- Microsoft also provides guidance for migrating to Exchange Online.
Article Details
- Event Type
- Microsoft announced that the Extended Security Update program for Exchange Server 2016 and 2019 will end in October 2026, with no further extensions.
- Impact
- After October 2026, Exchange Server 2016 and 2019 will receive no further security updates through the program, leaving remaining installations without those updates. Microsoft advises administrators to upgrade to Exchange Server Subscription Edition or migrate to Exchange Online.
Vendors
Products
Exchange OnlineIT admins are being urged to migrate to Exchange Server Subscription Edition or move to Exchange Online before support stops completely.Exchange Server 2016Microsoft has confirmed that the Extended Security Update program for Exchange Server 2016 and 2019 will end in October 2026, with no further extensions planned.Exchange Server 2019Microsoft advised IT admins to upgrade to Exchange Server Subscription Edition (SE), as they can perform in-place upgrades from Exchange Server 2019, a process identical to installing a Cumulative Update (CU).Exchange Server Subscription EditionIT admins are being urged to migrate to Exchange Server Subscription Edition or move to Exchange Online before support stops completely.