Windows 10 21H2 is now available for testing – here’s what’s new

Windows 10 21H2 testing

Microsoft has officially announced Windows 10 21H2 – the next
feature update for devices on Windows 10.

While Windows 11 is the next-generation operating system,
Microsoft says it’s planning to support Windows 10 until
October 2025. For those who prefer to stay on Windows 10, the
next feature update for your device is “version 21H2”, but it
could be officially called “Windows 10 October 2021 Update”
when it launches this fall.

The idea with Windows 10 21H2 is to give additional time to
users and businesses not ready for Windows 11. As we all know,
Windows 11 is a big update with redesigned Start Menu, and it’s
not for everyone. With this in mind, Microsoft has been working
on a new feature update for Windows 10.

Windows 10 version 21H2 is also for users not eligible for a

free upgrade to Windows 11. If you have an unsupported
device, you’ve nearly four years to decide what to do next. For
now, you’ll continue to receive quality improvements via
monthly updates and annual feature updates.

Windows 10 21H2 is currently live for devices in the Release
Preview Channel of the Insider program. The build number is
19044.1147 and it will be delivered via KB5004296 enablement
package, similar to the May 2021 Update and October 2020
Update.

What’s new in Windows 10 version 21H2 preview update

This new version of Windows 10 comes with plenty of
improvements. For example, Microsoft is enabling support for
WPA3 H2E standards to enhance wireless (Wi-Fi) connection
security.

H2E stands for Hash-to-Element and it comes with the following
security benefits:

  • Protection against side-channel attacks
  • Reduces potential side-channel attack vectors.
  • General security improvements.

Microsoft is also introducing support for simplified
passwordless deployment in Windows Hello for Business. However,
this is an enterprise-only feature.

GPU compute in WSL for Windows 10 21H2

For consumers and developers, Microsoft is introducing support
for GPU compute in the Windows Subsystem for Linux (WSL). With
Windows 10’s October 2021 Update, Microsoft is enabling GPU
compute in WSL, a new feature that would allow users to
leverage their GPU when working with WSL.

This could improve the performance of WSL containers and make
it easier for developers to do more machine learning
development and data science work.

It’s worth noting that GPU compute in WSL requires DirectX
12-based GPU from Nvidia, AMD or Intel. In addition to GPU
computer support, Windows 10 WSL will also get support for the
WSL install command and the update process has been improved
for faster deployment.

With Windows 11, Microsoft is planning to bring support for GUI
apps to WSL. This will allow users to run Linux and Windows
apps side-by-side with a native app-like experience.

Windows 10 support cycle

Windows 10 21H2 is part of the company’s Long-Term Servicing
Channel and it will be supported for LTSC customers until at
least 2026. For Windows 10 Home and Pro, Microsoft has planned
18 months of support, while Education and Enterprise customers
will get 30 months of support.

Windows 10 Pro and Home editions are officially supported until
October 2025, so it’s likely that Microsoft will release more
feature updates for the operating system in the coming years.

How to get the update now

Windows 10 version 21H2 is currently available for Windows
Insiders in the Release Preview Ring. If you’re part of the
beta channel of the Insider program, but your device does not
meet the new requirements for Windows 11, you’ll also get this
feature update today.

To download and install the update before everyone, use these
steps:

  1. Go to Settings > Update & Security > Windows Insider
    Program.
    Windows 10 version 21H2 Insider
  2. Click the “Get started” button.
    Windows Insider program select account
  3. Link your Microsoft account. If you use Windows 10
    Enterprise, link your Azure Active Directory account. The
    account must be registered for the Windows Insider Program.

    Windows 10 21H2 preview channel

  4. Choose the “Release Preview Channel” to get the update.

    Windows Insider program setup

  5. Agree and confirm the legal stuff.
  6. Select “Restart Now” to get your PC into the Release
    Preview Channel. A restart is required for Windows Insider
    Program.
  7. After rebooting verify your Windows Insider Program
    settings and double-check that it is “Release Preview Channel”
    under “Pick your Insider settings”.
  8. Open Settings > Update & Security > Windows Update
    and keep checking for updates until you see the preview build.

Keep in mind that Microsoft is still working on Windows 10
October 2021 Update and more improvements could be on the way.
These new features and improvements should make their way to
the mainstream audience later this year.

As mentioned at the outset, Windows 10 Build 19044 update will
be delivered via enablement package and its size would be less
than 500MB if you download it using Windows Update.

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