Office 2021 support ends after five years
Office 2021 launched on Oct. 5, 2021, and Microsoft’s lifecycle policy sets its end-of-support date to Oct. 13, 2026. The same date applies to Office LTSC 2021 and Office LTSC 2021 for Mac, according to documents reviewed by Windows Latest.
After October 2026, Office 2021 apps will continue to run, but they will no longer receive security or quality updates. Users will need to choose between buying Office 2024, which is supported until 2029, or switching to a Microsoft 365 subscription.