Windows 11 24H2 Loses Support October 13 as 26H2 Takes Over

Windows 11 24H2 end of support officially landed on October 13, the same day Microsoft shipped the version’s final scheduled monthly security update for Home and Pro editions. On that same date, Windows 11 26H2, released as the 2026 Update on September 29, received its first regular monthly servicing update, marking a quiet but important handoff between Windows 11 generations.

What’s actually happening on October 13

October’s Patch Tuesday closes out 24H2 with one last round of scheduled security fixes. After that, Microsoft stops providing regular security patches, bug fixes, and technical support for the version. Meanwhile, 25H2 keeps receiving its normal monthly updates, so this isn’t a single cutoff point for every Windows 11 user — it’s a staggered transition where only 24H2 reaches the end of its road.

If your PC is still running 24H2 after the deadline, it won’t suddenly stop functioning. It just loses the steady stream of security protections that keep a modern operating system safe from newly discovered vulnerabilities, which is reason enough to check Windows Update and move to a supported release.

Why the move to 26H2 is less painful than usual

Normally, jumping to a new annual Windows feature update feels like a meaningful upgrade. This time is different. Microsoft built 24H2, 25H2, and 26H2 on the same underlying servicing foundation, so the company can switch a device over to 26H2 without replacing the whole operating system.

For devices already running 25H2, the move to 26H2 arrives as a small Enablement Package rather than a full feature update, since most of the code is already sitting on the machine. That makes the transition noticeably quicker and less disruptive than a traditional clean install of Windows 11 would be.

Where the three versions stand after October 13

• Windows 11 24H2 receives its final scheduled security update and then reaches end of support.
• Windows 11 25H2 keeps getting its regular monthly updates as usual.
• Windows 11 26H2 begins its own regular monthly servicing cycle for the first time.

In short, Microsoft isn’t retiring Windows 11 as a whole or forcing everyone onto 26H2 overnight — it’s simply closing the book on one specific version while the newer release takes its place in the support queue.

Who should pay attention

This matters most if you’re not sure which version your PC is on. Anyone still running 24H2 after October 13 should treat it as a deadline to update, since continued use means missing out on Microsoft’s regular security protections going forward. Users already on 25H2 or 26H2 don’t need to do anything differently; their update cycles continue as normal.

Because the underlying code is shared across versions, Pureinfotech expects the move to 26H2 to be relatively painless, without a traditional clean installation. Our guide on how to check your Windows 11 version and update it walks through the steps.

The bottom line

October 13 is a quiet but meaningful milestone in the Windows 11 lifecycle: 24H2 exits support while 26H2 officially takes over as the actively serviced release. If you haven’t checked your Windows version lately, now’s a good time to do it, since staying on an unsupported build means losing Microsoft’s regular security coverage — even though the computer itself will keep running.

Source: Pureinfotech