Windows 10 build 20211.1000

Windows 10 build 20211 is the twelfth Insider Preview build of Iron. It was released to all Insiders in the Dev Channel on 10 September 2020.

Changes

 * Made the search box for searching the list of file types, protocols, and apps when choosing a default app in Settings, which was first introduced with Manganese build 19608 available to all Windows Insiders.
 * You can now attach and mount a physical hard disk from a WSL 2 distro. This feature enables Windows to be able to read the ext file system that is used in Linux. It can be accessed by typing  into PowerShell.

Bugs

 * Live preview doesn't work for pinned site tabs.
 * The Settings app may crash if you open Manage Disks and Volumes.
 * Some Office applications may either crash or go missing if you update to this build.
 * The Linux kernel is not installed when you use the  in the Windows Subsystem for Linux. To workaround this issue, run   to the latest kernel version.
 * Some WSL 2 distros can give you the error "The remote procedure call failed" on startup.
 * Some virtualization software have a chance of giving you a BSOD with the error code.
 * The vEthernet adapter in WSL2 distros can randomly disconnect itself.
 * You may see generic errors when you install WSL through.