hands on If you're building a website that will eventually be hosted on a Linux server (as so many are), you have a couple of ...

It didn’t, however, make Lxcore.sys, P9rdr.sys, or p9np.dll open source, as they are part of Windows. If you want to download the source code for version 2.5.7, GitHub is the place to go.

An update, dubbed Windows Subsystem for Linux 2, did just that, and was rolled out to testers in 2019. In 2021, Microsoft pulled the code from Windows.

The other component that will remain closed source are the P9rdr.sys and p9np.dll files that make it possible to use “\wsl.localhost” for filesystem redirection from Windows to Linux.

Arch Linux is now available in the Windows subsystem for Linux 2. (Image: Screenshot / dmk) Apr 22, 2025 at 9:14 pm CEST 2 min. read By Dirk Knop ...

Microsoft has announced that it's open sourcing the Windows Subsystem for Linux, and is inviting developers in the community to contribute and help make Windows the best OS for cross-platform app ...

May 21, 2025 at 7:06 a.m. PT HJBC/Getty Images It took Microsoft long enough, but the company has finally open-sourced its Windows Subsystem for Linux (WSL) code.