September 21, 2020

Windows 10 Insider Preview Build 20211 supports WSL2 system ext4 file system

2 min read

Microsoft has now launched the developer beta this week, the version number is Windows 10 Insider Preview Build 20211, which mainly fixes some bugs and functional problems.

The default application search function that has been previously provided to some users is now available to all users, and users can experience it in the default application settings after upgrading.

This time, it is optimized for the WSL 2 function. Now you can directly access file systems that are not supported by Windows 10, such as ext4, through the subsystem.

For example, Windows 10 does not natively support the ext4 file system, but after the test update, WSL2 can be used to read and access these unsupported file systems.

If users use Windows and Linux dual systems and install them on different hard drives, they can now access Linux partitions in Windows WSL2.

For detailed descriptions of this function and common command lines, please visit the page.



  • Fixed an issue where certain 32-bit applications running on a 64-bit OS do not get properly promoted to the discrete GPU for hybrid configurations.
  • We fixed an issue that could result in Start menu tiles continuing to display an “app update in progress” progress bar after an app had already finished updating.
  • We fixed an issue that could result in some of the app icons in Start appearing unexpectedly tiny.
  • We fixed an issue on ARM64 devices resulting in Start crashing on launch the next time it was opened after launching certain apps from Start and then closing them.
  • We fixed an issue that could result in the lock screen hanging.
  • We fixed an issue that could result in ShellExperienceHost.exe hanging.
  • We fixed an issue where hero images weren’t showing up in notifications (for example, when taking a screenshot using WIN + Shift + S).
  • We fixed an issue from the last few flights that could result in Windows update getting stuck while downloading the update.
  • [ADDED] You will no longer get asked to reinstall a .NET update after each flight.