Microsoft Releases September 2021 Windows 10 Cumulative Updates

Microsoft has published a new batch of cumulative updates for Windows 10, this time as part of the typical monthly Patch Tuesday taking place on the second Tuesday of every month.

The new cumulative updates are mostly aimed at fixing security problems, and this is the reason they land on a Patch Tuesday in the first place.

So while all eyes are currently on Windows 11, you should still install these updates on your devices if you’re running Windows 10, especially as they address security vulnerabilities in the operating system.

Needless to say, Windows 10 version 2004, 20H2, and 21H1, are the ones running on most devices, and in this case, the update is KB5005565.

On the other hand, some older versions of Windows 10, including 1703, 1709, 1803, and 1903 are no longer serviced as they have already reached the end of support.

Here’s the full list of cumulative updates available for Windows 10 devices this month:  

• Windows 10 version 1507 — KB5005569 (OS Build 10240.19060)
• Windows 10 version 1607 — KB5005573 (OS Build 14393.4651)
• Windows 10 version 1703 — EOS
• Windows 10 version 1709 — EOS
• Windows 10 version 1803 — EOS
• Windows 10 version 1809 — KB5005568 (OS Build 17763.2183)
• Windows 10 version 1903 — EOS
• Windows 10 version 1909 — KB5005566 (OS Build 18363.1801)
• Windows 10 version 2004, 20H2 and 21H1 — KB5005565 (OS Builds 19041.1237, 19042.1237, and 19043.1237)

At the time of writing, I’m not aware of any installation problems hitting devices where these cumulative updates are offered, and KB5005565 installed just fine on my device.

Keep in mind these updates are specifically aimed at Windows 10, so if you’re already running Windows 11, there’s no new cumulative update for you. Most likely, the security improvements available today on Windows 10 will be part of the next cumulative update for Windows 11 as well in the Insider program.