Windows is a constantly evolving product, with Microsoft releasing a new version every year. For instance, the latest version, Windows 11 24H2, was just released a few weeks ago. Since Microsoft can only support a limited number of versions at a time, while we gain a new version each year, an older one is retired. This year, Windows 11 version 22H2 (Home and Pro) and version 21H2 (Enterprise, Education, and IoT Enterprise) are being phased out.
You might recall when Microsoft introduced Windows 11, they also launched the PC Health Check app to confirm if your PC met the requirements for upgrading. Although this check could likely be done by the Windows 11 Installation Assistant, the PC Health Check app is still around. Oddly enough, even if you're already running Windows 11, you still need this app. If you don’t want to wait for version 24H2 to appear in Windows Update, you can use the Installation Assistant to manually download it. However, you'll also need to install the PC Health Check app to confirm your PC’s readiness. This seems unnecessary, as 24H2 runs on any Windows 11 PC without needing to bypass major requirements.
For those using Windows 11 Home and Pro version 22H2, it's time to upgrade since its 24-month support period is ending. Without the upgrade, you won’t receive new features or security updates. Fortunately, updating is simple—Microsoft may have even done it for you. Check by going to Start > Settings > Windows Update and clicking "Check for updates." If you’re still on 22H2, you should see an update for 23H2, and possibly 24H2 as well, though the latter is still new and might have some bugs.
For users on Windows 11 Enterprise, Education, or IoT Enterprise version 21H2, which has a 36-month support cycle, it’s time to upgrade too. These editions don’t update automatically, so the update must be done manually, usually by IT departments. While 24H2 is being rolled out in phases, you may not have access to it yet, but 23H2 remains supported, so upgrading to that version will ensure you continue to receive updates.
If you're still on Windows 10, you’re safe for now, but keep in mind that its support ends on October 14, 2025.