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8h ago

Microsoft Ends Support for Office 2016/2019, Exchange 2016/2019, Skype for Business, and Windows 10

Microsoft urges organizations to migrate to Microsoft 365 services or to subscription-based on‑premises editions to retain security updates and support.

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Overview

  • Effective October 14, 2025, these products stop receiving security and bug fixes, time‑zone updates, and official technical support.
  • Deployments will continue to run, but Microsoft warns of heightened security, compliance, and stability risks if they are not upgraded.
  • Recommended paths include moving email to Exchange Online and collaboration to Microsoft 365 and Teams, with Exchange Server SE and Skype for Business Server SE offered for on‑premises needs.
  • Microsoft advises an in‑place upgrade from Exchange Server 2019 to Exchange Server SE and a side‑by‑side upgrade from Exchange Server 2016 to SE, with comparable guidance for Skype for Business Server 2019 and 2015.
  • Migration help is available through Microsoft FastTrack and related programs, and customers can apply to TAP to test pre‑release SE builds; Office LTSC 2021 reaches end of support on October 13, 2026.