Windows 11 26H2 is here, and it’s a quiet update that matters more than it looks
Microsoft’s annual Windows 11 feature update arrived on 29 September. Officially it’s the “Windows 11 2026 Update”, or version 26H2 for those of us who live in Settings. If you were hoping for a flashy overhaul, this isn’t it. It is still one of the more important updates you’ll install this year, mostly because of what it does to your support clock.
Small download, one restart
If your PC is already on Windows 11 24H2 or 25H2, 26H2 isn’t a full reinstall. It arrives as an enablement package (eKB). Most of the code is already on your machine from the past year of monthly updates, and the package simply switches it on. In practice it downloads quickly, installs in a few minutes and needs one reboot. The first build is 26300.9550, delivered as KB5124010.
The trade-off is that 26H2 brings almost nothing new of its own. It mainly turns on features that have been rolling out in pieces over the past year, including the reworked Start menu and the File Explorer changes. Some features that sat dormant in 25H2 are now on by default.
The real reason to install it: support
Every annual release resets the support period. Install 26H2 and Home and Pro editions get 24 months of security updates, through to October 2028. Enterprise and Education editions get 36 months.
The timing matters if you’re still on 24H2. Home and Pro editions of 24H2 stop receiving updates on 13 October 2026, less than a fortnight away. After that, a 24H2 machine keeps running but no longer gets security patches. Moving to 26H2 (or 25H2) keeps you covered.
How to get it
Microsoft is rolling it out in waves, so not every PC will see it straight away. To get in early, open Settings, go to Windows Update and turn on “Get the latest updates as soon as they’re available”. Then check for updates. If your PC is eligible, 26H2 will show up as an optional download.
There are two catches. Microsoft may hold back the update from a device with a known compatibility problem until it’s resolved, so if you don’t see it yet, that may be why. And if you’re on 26H1, the Arm-focused release that came with newer Snapdragon laptops earlier this year, you can’t upgrade to 26H2 because 26H1 runs on a newer platform.
Known issues so far
Microsoft is still listing a few known problems that carry over from recent updates, all marked as mitigated. Some USB audio devices may show a “Code 10” error and produce no sound. There’s a Credential Guard problem with domain trusts in business networks, and some Azure Virtual Desktop users may get a black screen after signing in. Most home users won’t run into any of these, but if you rely on a USB DAC or older audio interface, it’s worth checking for a fix before you jump.
Should you install it?
For most people, yes. The download is small and the risk is low, and you get two more years of security updates. If you’re on 24H2, aim to install it before 13 October. If you’re on 25H2, there’s no urgency, but there’s also little reason to wait. The first monthly security update for 26H2 is due on 13 October, so cautious types might hold off until then and take both together.
