Windows 10 build 19645 supports Hyper-V nesting on AMD chips

by Don Sharpe
Don Sharpe
Don Sharpe
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Don has been writing professionally for over 10 years now, but his passion for the written word started back in his elementary school days. His work has been... read more
Affiliate Disclosure
  • A day after releasing Patch Tuesday updates, Microsoft has shipped Windows 10 Insider Preview Build 19645 to beta testers in the Fast ring.
  • Build 19645 introduces support for nested virtualization on AMD-powered PCs.
  • For the latest Windows updates shipping to beta testers, check out our Windows Insider Program page. 
  • You can always reach for the Windows 10 hub for news, troubleshooting guides, and more.
Build 19645 hits the Fast ring

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A day after releasing Patch Tuesday updates, Microsoft has shipped Windows 10 Insider Preview Build 19645 to beta testers in the Fast ring.

This update brings impressive changes, including support for nested virtualization on AMD processors. Also, it introduces a new way of delivering updates to the Linux Kernel.

The package includes a couple of bug fixes too.

Nested virtualization in Windows 10 build 19645

Windows 10 build 19645 introduces support for nested virtualization on AMD-powered PCs.

So, if your computer uses an AMD processor, you can now use it to run Hyper-V within a Hyper-V virtual machine (VM).

Generally available versions of the Windows OS support nested virtualization only on Intel microchips.

The only other change build 19645 brings relates to how Microsoft delivers updates for the Linux kernel residing in WSL 2 distributions. With this version, the Windows image no longer contains the Linux kernel.

Therefore, in the future, Microsoft will be servicing the Linux kernel via Microsoft Update.

We changed the servicing model for the Linux kernel inside of Windows Subsystem for Linux 2 distributions. This build includes this change to remove the Linux kernel from the Windows image, and instead have it be serviced via Microsoft Update, the same way that 3rd party drivers (like graphics, or touchpad drivers) are installed and updated on your machine today.

Some of the fixes this Windows 10 update brings are:

  • Bug checks for PCs booting from eMMC storage when coming out of hibernate.
  • Inconsistent rendering of taskbar preview thumbnails.
  • Some text fields not showing handwriting input after tapping with a pen.

Plus, if you’re a fan of the Your Phone app, Microsoft has confirmed that you can now use the app to control music or audio apps running on your Android smartphone.

Have you installed Windows 10 build 19645 yet? Feel free to let us know or ask any questions via the comments section below.

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