Support for Office LTSC 2021, and additional apps will end on October 13, 2026

🚨 The Signal: Office LTSC 2021, Visio LTSC 2021, and Project LTSC 2021 will reach end of support on October 13, 2026. Continued use after this date will result in no security updates, creating significant vulnerability and compliance risks.

The Impact

All users of Office LTSC 2021 products face critical security and compliance risks if upgrades are not completed before October 2026.

• End-users: Will use unsupported software, increasing malware risk.
• Security Teams: Face increased attack surface and compliance audit failures.
• IT Admins: Must manage complex upgrade projects across the organization.
• Leadership: Bears responsibility for increased organizational risk and potential breaches.

The Action

1. Identify all devices running Office LTSC 2021, Visio LTSC 2021, or Project LTSC 2021.
2. Plan migration to Microsoft 365 Apps or a supported Office perpetual version.
3. Utilize Microsoft Intune or Configuration Manager for phased deployment of new software.
4. Communicate end-of-life dates and upgrade plans to affected users.
5. Verify successful removal of unsupported software post-migration.

Domain: M365-Apps · Impact: high · Workload: M365 Apps · Essential Eight: Patch Applications · ISM: ISM-0304, ISM-1690, ISM-1691, ISM-1692, ISM-1693, ISM-1698, ISM-1699, ISM-1700, ISM-1704, ISM-1807, ISM-1808, ISM-1876, ISM-1901, ISM-1905