Microsoft has announced an extension of security update support across key Windows platforms and Microsoft 365 Apps—offering up to three extra years of protection beyond the originally stated end-of-support dates.

📌 What’s Changed?

Platform Original EOS Extended Security Updates End Date Channels Receiving Updates
Windows 10 October 14, 2025 October 10, 2028 All Microsoft 365 Apps channels
Windows Server 2016 October 2025 October 10, 2028 Microsoft 365 Apps
Windows Server 2019 October 2025 October 10, 2028 Microsoft 365 Apps

  • Microsoft 365 Apps will continue to receive feature updates until 2026–2027, transitioning to security-only updates through October 10, 2028.

  • Devices running Microsoft 365 Apps on these Windows versions will continue to receive security updates even after the operating system exits mainstream support.

🔍 Why This Extension Matters

  • Extended Protection: Legal organizations now have additional time to complete migrations without compromising Office security.

  • Controlled Transition: A phased approach allows for feature updates to continue before switching to security-only servicing.

  • Simplified Security Management: Microsoft 365 Apps remain in support through regular update channels until 2028, even on aging operating systems.

🧭 What Law Firms Should Do

  1. Plan Upgrades Strategically
    Use this extended timeline to organize migrations to newer Windows and server environments.

  2. Align Office and OS Transitions
    Combining Office and OS upgrades ensures compatibility and operational continuity.

  3. Track Channels and Versions
    Ensure that devices reach the required Microsoft 365 update channels to stay within support.

  4. Avoid Unsupported Environments
    Running Microsoft 365 Apps on outdated or unqualified platforms may lead to reduced performance and lack of support.

  5. Assess Server 2012/2012 R2 Usage
    Organizations still relying on these platforms should consider transition plans, as limited support continues only through 2026.

🚀 Key Takeaway

For law firms and corporate legal departments using Microsoft 365 Apps, this extension provides critical time to modernize infrastructure while staying protected. Transitioning to Windows 11 or updated server platforms remains the long-term goal—but now with a clearer, extended path forward.

Next Steps with Innovative Computing Systems

We can help with:

  • Assessment of systems and impact

  • Migration roadmaps tailored to your timeline

  • Cybersecurity support during and after transitions

  • Managed IT services to ensure continuous uptime

Contact us to schedule a strategy session and ensure your technology roadmap aligns with Microsoft’s updated lifecycle support.