If you're running Windows 11 Home or Pro on version 24H2 in 2026, you'll soon need to update to remain supported.

Microsoft has quietly followed through on its past announcement by rolling out Windows 11 25H2 to all compatible PCs running Windows 11 Home or Pro. Until now, the upgrade was optional and required ...

Windows 11 26H2 is only a 174KB update for PCs running 24H2 or 25H2, while Windows 11 23H2 users must download nearly 6.5GB.

Windows 11 26H2 is just 174KB for PCs on 24H2 or 25H2 thanks to Microsoft's shared servicing branch model, versus 6.5GB for a 23H2 upgrade.

The annual feature update for Windows 11 is rolling out. In the Insider channels, the Windows 11 builds are already called 26H2.