Microsoft’s release of Windows 10 2004 preview cumulative update has a fix to patch the WSL2 bug. The Windows Subsystem for Linux 2 (WSL2) was reported to be crashing whenever launched by users, after updating to the September Windows update. Since this fix is available in an optional update, users have to apply manually through Settings.

Microsoft’s New Update Patches WSL 2 Bug

The Windows Subsystem for Linux is a feature that lets users run Linux on Windows systems. While this is used by a few members, it’s still an important one to be considered, since it provides the flexibility of switching between Windows and Linux easily. While this is going well, an update released in September has almost killed this feature.

Microsoft Patches WSL 2 Bug with Release of Windows 10 2004 Update

The September cumulative update, which is essential for fixing a bug in SSD defragmentation, has crashed the Windows Subsystem for Linux 2 feature. Users who tried opening it were shown “Element not found” pop-up. Many have reported this in September itself, causing Microsoft to come up with a fix now.

The newly released Windows 10 2004 preview cumulative update has a patch for this bug, which allows users to try this feature again. Microsoft has specifically named this update as, “Addresses an issue in Windows Subsystem for Linux (WSL) that generates an “Element not found” error when you try to start WSL.

But since this an optional update, it requires the users to update manually. So if you’re one, navigate to Settings > Windows Update > View optional updates > Other updates. This will be named as the “KB4577063 update“, click to install. Now reboot the system to apply this. If you’re not interested yet, the October 2020 Patch Tuesday update will have this in eventually.


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