Windows 11 vs Windows 10: Is It Time to Upgrade Your Fleet?

Microsoft ends mainstream support for Windows 10 on 14 October 2025. After that date, security patches stop — which means every device still running Windows 10 becomes a progressively larger liability. For Irish businesses with a mixed fleet, the clock is already ticking.

The TPM 2.0 Problem

Windows 11 requires a TPM 2.0 chip — a security module that most machines manufactured before 2017 don't have, or have disabled. Run the PC Health Check app across your fleet before planning a refresh. You may find a larger proportion of machines need replacing than expected.

What You Gain from Windows 11

Beyond the visual refresh, Windows 11 brings meaningful security improvements: Secure Boot enforcement, hardware-based isolation for credentials, and significantly better integration with Microsoft Defender. For businesses handling sensitive data, these aren't optional extras.