90-Day Reminder: Windows 11, version 24H2 and Windows 10 LTSB 2016 reaching end of updates on October 13, 2026

🚨 The Signal: Windows 11 24H2 Home/Pro and Windows 10 LTSB 2016 reach end-of-life for security updates on October 13, 2026. Unpatched systems are vulnerable to new threats, requiring upgrades to supported versions or ESU.

The Impact

Security teams and IT administrators are affected, facing critical risk from unpatched operating systems.

• Security Teams: Increased attack surface from unpatched OS.
• IT Administrators: Urgent need to plan and execute OS upgrades.
• Organisations: Non-compliance with security frameworks due to unpatched systems.

The Action

1. Identify all devices running Windows 11, version 24H2 Home/Pro and Windows 10 Enterprise LTSB 2016.
2. Plan and schedule upgrades for Windows 11, version 24H2 Home/Pro to Windows 11, version 25H2.
3. Plan and schedule upgrades for Windows 10 Enterprise LTSB 2016 to Windows 11 Enterprise LTSC 2024.
4. Evaluate and procure Extended Security Updates (ESU) for devices requiring additional transition time.
5. Verify successful patching and update status post-upgrade using Intune or other management tools.

Domain: Intune · Impact: high · Workload: Other · Essential Eight: Patch Operating Systems · ISM: ISM-1407, ISM-1501, ISM-1621, ISM-1622, ISM-1623, ISM-1654, ISM-1655, ISM-1694, ISM-1695, ISM-1696, ISM-1701, ISM-1702, ISM-1877, ISM-1889, ISM-1902