Credit: Microsoft
Until today, Windows 10 users who wanted to work with the new Windows Subsystem for Linux version 2 needed the latest feature update for Windows: The Windows 10 with 2020 Update (aka, Windows 10 2004). But on August 20, Microsoft made a surprising announcement: WSL2 was also rolled back to Windows 10 1903 and 1909.
Microsoft’s launch of Windows 10 2004 was slow. And some business users tend to skip the spring / H1 Windows 10 feature updates and focus on the fall / H2, which are supported longer and get more real-world testing. This is the audience that is probably most interested in WSL2, so making WSL2 available in 1909 seems like a smart move.
Officials said in a blog post today that Microsoft has been working to bring WSL2 to 1903 and 1909 “over the last few months.” They said the goal is for the backport to make WSL2 available to more Windows users. The 1903/1909 backport will be for x64 systems only; those using ARM64 should use Windows 10 2004 to get WSL2.
WSL is a fully reworked version of the original WSL. It changes how Linux distributions interact with Windows. As officials noted in today’s post, any Linux distribution running on Windows 10 can run as WSL1 or WSL2 and can be switched at any time.
WSL2 provides a complete Linux kernel built into WSL2; improved system call support for all Linux apps, including Docker, FUSE, rsync and more; and improved file system performance, according to Microsoft.
To get WSL2 for 1903 and 1909, users just need to check for updates via Windows Update. The instructions for updating to WSL2 are here in Microsoft Docs.
Officials remind users: “This backport has the minor build number: 1049. To sum up, if your minor build number is 1049 or higher on Windows builds 18362 or 18363, then you have the backport and the ability to use WSL 2- distros. “
