Microsoft Introduces Exchange 2016/2019 Extended Security Program

The Exchange Extended Security Update program is a 6-month lifeline for organizations struggling to upgrade servers to Exchange Server SE. Although it’s easy to upgrade a server to , many things might get in the way before the Setup program can run. Small things like vacations, buying new hardware, or deploying a new O/S. From August 1, organizations can sign up to receive security updates from October 2025 to April 2026.

https://office365itpros.com/2025/07/17/exchange-extended-security-update/