10/20/2026
Microsoft’s October 2026 Exchange Server security update marks the final month of extended security updates for Exchange Server 2016 and 2019. After October, Microsoft says new updates will be released only for Exchange Server Subscription Edition.
One useful step for Treasure Coast businesses: ask your IT provider whether any on-premises Exchange 2016 or 2019 server is still in use, and put a dated migration plan in place now.
ACT Computers can help review your Microsoft 365 and email environment.
772-567-7888 | www.actcomp.us
Source: https://techcommunity.microsoft.com/blog/exchange/released-october-2026-exchange-server-security-updates/4563014