There are two completely different upgrades hiding behind the name 25H2. If your PC runs 24H2, 25H2 is a tiny enablement package and a single restart. If it runs anything older, it is a full operating system upgrade. This page tells you which one you have, and how to run it safely.
Windows 11 version 25H2 (the 2025 Update, build 26200) arrived on 30 September 2025 - but the upgrade experience depends entirely on where you start. 24H2 and 25H2 share the same core, so moving between them is closer to flipping a switch than reinstalling Windows. Older versions take the long road. This core guide walks through both routes in the right order, states plainly where the video's "1 click" claim is true and where it is not, and gives you the support dates that make the upgrade worth doing.
Everything on this page depends on one fact: the version already installed on your PC. Check it before you download anything.
winver and press EnterMicrosoft released Windows 11 version 25H2 on 30 September 2025. It is not a brand-new operating system - 25H2 and 24H2 share the same core files and the same servicing branch, which is exactly why the fast route below exists.
If you are on 24H2, the 25H2 features are already sitting on your PC in a dormant state, delivered quietly inside the regular monthly updates. The upgrade is a small enablement package - Microsoft describes this kind of package as a master switch that simply turns those features on.
winver again - the version should now read 25H2, build 26200The whole thing usually takes minutes, not hours, and it needs just one restart. This is the only situation where "upgrade in 1 click" is an honest description.
Older versions do not share the 24H2 core, so there is no switch to flip. The upgrade replaces the operating system in place - a download of several GB, several restarts, and typically 30 to 90 minutes depending on the PC.
setup.exe from inside your current WindowsBecause this route rewrites the whole system, do the backup checks first - the companion page in this set covers them one by one. The video above shows this style of upgrade running on screen, including what the setup screens look like.
Same destination, very different journey. The enablement route keeps your current build's drivers and servicing history, changes the version label and support clock, and can be undone in minutes. The full route re-detects every device, rebuilds the component store, and carries the normal risks of any big Windows setup - a driver that misbehaves, a long first boot, a failed install that rolls back. Neither route deletes your files when you choose the keep-everything option, and both reset the support clock: 25H2 Home and Pro editions are supported until 12 October 2027, while 24H2 Home and Pro stopped receiving updates on 13 October 2026. That support date, more than any new feature, is the real reason to move.
25H2 is rolled out in stages, and a PC can be skipped for weeks because of a safeguard hold - Microsoft blocks the offer when it detects a driver or app known to clash with the new version. If the offer is missing, install all pending 24H2 cumulative updates first, turn on the "get the latest updates" toggle, and check again over the following days. If it still does not appear, the full-route ISO upgrade is the manual way in on supported hardware. What you should not do is force the upgrade on a held machine with random registry tricks from a forum - the hold usually exists because something on that exact PC is known to break.
The video shows the 25H2 upgrade running start to finish - the download, the setup screens and the first boot on the new version.
Watch Full VideoYes. Moving from Windows 10 or any earlier Windows 11 version to 25H2 is a free upgrade on a PC with a genuine, activated Windows licence. The upgrade carries your digital licence across - a properly activated PC stays activated afterwards.
On a 24H2 PC the enablement package usually installs in a few minutes with one restart. On 23H2, 22H2 or Windows 10 it is a full in-place upgrade - a download of several GB and roughly 30 to 90 minutes with several restarts, depending on the machine.
No, as long as you run setup from inside Windows and choose Keep personal files and apps. That is the default for both the Windows Update route and the ISO route. A clean install from bootable media is a different choice and does erase the drive - it is not what this guide uses.