exchange esu

The exchange esu tag covers Microsoft's Extended Security Updates (ESU) program for Exchange Server 2016 and 2019, including the new Period 2 ESU covering May through October 2026. This paid program provides a final, non-renewable bridge to Exchange Server Subscription Edition, requiring a fresh purchase even for customers who bought the first ESU window. The tag also touches on broader ESU options mentioned in the context of Office 2016/2019 end of support and Patch Tuesday updates, where a limited six-month ESU option for on-premises Exchange is noted. Discussions emphasize that Microsoft is tapering support to push organizations toward migration, with no extensions beyond these controlled ESU periods.