Overview
- Support ends on October 14, 2025 for Office 2016 and 2019 suites and apps, Exchange Server 2016 and 2019, and Skype for Business Server 2015 and 2019 plus the 2016 and 2019 clients.
- After the deadline Microsoft will stop providing security fixes, bug fixes, technical support, and time zone updates for the affected products.
- Office receives no extended security updates, with Microsoft steering customers to Microsoft 365 or the on‑premises Office LTSC 2024 release.
- Microsoft recommends moving to Microsoft Teams or upgrading to Skype for Business Server Subscription Edition, and migrating to Exchange Online or upgrading to Exchange Server SE with in‑place upgrades from Exchange 2019 supported.
- Installations will continue to run after support ends but Microsoft warns of heightened security exposure, with migration help available through FastTrack, App Assure, and the Skype Technology Adoption Program.