[SOLVED] Enabling WSL fails during reboot

[gaibo]

Windows build number: 10.0.16299.64

Issue: I cannot enable WSL, either through "Enable Features" or by running "Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux" in Admin PowerShell. During the reboot, the screen will flash "unable to something something, undoing changes" and once it boots WSL is still not enabled.

I've tried enabling Developer's Mode, didn't help. I have Ubuntu for WSL installed through Microsoft Store, and when I try to launch that, it tells me to enable WSL, which I apparently can't do.

[Biswa96]

Repair your Windows system with dism command. See this article:
https://technet.microsoft.com/en-us/library/hh824869.aspx

Run these commands one by one and check the outputs;

Dism /Online /Cleanup-Image /CheckHealth 
Dism /Online /Cleanup-Image /ScanHealth
Dism /Online /Cleanup-image /Restorehealth
sfc/scannow

Also disable and renable Windows update (wuauserv) and BITS services.

[gaibo]

@Biswa96 No component store corruption detected when running "Dism /Online /Cleanup-Image /ScanHealth" on elevated CMD. Any other suggestions?

[gaibo]

@Biswa96
I finally figured out the issue! No wonder no one else was having it.
Check Point Endpoint Security VPN software for my work was preventing my system from making big changes. I remembered that last time Windows had a major update, it forced me to uninstall the VPN software, and for good reason I guess. The company Check Point has a history with WSL actually.
We can close this issue now.