Windows Server 2022, Office and Windows 11 Extended Support\EoL Updates

Microsoft have a few important support dates to keep on your radar this autumn. Windows Server 2022 is approaching the end of mainstream support, Office LTSC 2021 is reaching its end of support, and some Windows 11 installations will need upgrading in the coming weeks.

The server changes are particularly worth reviewing, given how widely Windows Server is used to run essential network services.

Windows Server 2022 moves to extended support

Windows Server 2022 reaches the end of mainstream support on 13 October 2026. This is particularly relevant to schools using it for Active Directory, DNS, DHCP, file and print services, or other core infrastructure.

This does not mean security updates are stopping. Windows Server 2022 will move into extended support, continuing to receive security updates until October 2031. However, mainstream support ends, so schools should factor the change into their longer-term infrastructure plans.

There is no need to rush into replacing a working server simply because this milestone has arrived. Instead, check that systems are fully patched, review application and hardware dependencies, and consider whether Windows Server 2025 should be the target for your next refresh.

Office LTSC 2021 support ends

Office LTSC 2021 also reaches end of support on 13 October 2026. Unlike Windows Server 2022, this is a full end of support: Microsoft will no longer provide security updates, bug fixes or technical support for the product.

Schools still deploying Office LTSC 2021 on staff or classroom devices should identify affected installations and plan a move to Microsoft 365 Apps or Office LTSC 2024, depending on their licensing and requirements.

The applications may continue to work after the deadline, but they will no longer receive security fixes, making this an important item for software inventories and upgrade plans.

Windows 11 support dates to watch

There are two further Windows 11 milestones to consider:

• Windows 11 23H2 Education and Enterprise: support ends in November 2026. Plan to move remaining devices to a supported release.

• Windows 11 24H2 Home and Pro: support ends on 13 October 2026.

• Windows 11 24H2 Education and Enterprise: remains supported until October 2027.

The distinction between editions matters here. Schools using Education or Enterprise should not confuse the October 2026 Home and Pro deadline with their own 24H2 support date.