WSL, how do I upgrade from FedoraLinux-42 to FedoraLinux-43?

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On Windows, what is the correct way to upgrade WSL from FedoraLinux-42 to FedoraLinux-43?

I tried the instructions on this page:

Upgrading Fedora Linux Using DNF System Plugin :: Fedora Docs

Got:

Catastrophic failure
Error code: Wsl/Service/E_UNEXPECTED
[process exited with code 4294967295 (0xffffffff)]

(which went away after I did wsl --update in admin powershell :anxious_face_with_sweat:)

Not sure it was upgraded correctly. It’s still listed as FedoraLinux-42 but cat /etc/fedora-release says 43

Feels like a bit of a mess, the upgrade process was not pleasant.

Help?

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I have no idea but I’m glad to see a fellow KLF fan here.

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Thanks, for now I’m just installing the new version, migrating my files and configs over, and deleting the old one.

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That is the name that you give a linux install to Windows WSL’s config if I’m guessing where you are seeing this.

It is not part of the Fedora install.

I’ve not tried that upgrade yet but I’m surprised that it was messy.
Maybe the instructions should include a wsl --update to make Windows happy?

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I’ve just completed this upgrade based on the previous comments, but for the sake of clarity, these are the exact steps I followed:

In Fedora itself:

sudo dnf upgrade --refresh -y

sudo shutdown -h now

Launch Fedora again.

sudo dnf system-upgrade download --releasever=43

sudo dnf5 offline reboot

Wait a couple of minutes (depending on the size of your current installation and the number of packages to be installed; mine was around 250).

In PowerShell:

wsl --update

Still in PowerShell, click the ∨ arrow, select Settings, and under Profiles click FedoraLinux-42. Change the name from 42 to 43 and click Save.

Next, open the Windows menu, type Fedora, right-click FedoraLinux-42, and select Open file location. Right-click FedoraLinux-42, press F2, change 42 to 43, and press Enter.

Lastly, open regedit and change 42 to 43 in:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lxss\{uuid-string}\DistributionName

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lxss\{uuid-string}\ShortcutPath

It’s mostly like any other Fedora in-place upgrade, apart from the Windows-specific steps.

Edit: Added changes to registry keys
Edit 2: Added PowerShell profile rename based on digitalman comment.

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Thanks for the complete WSL upgrade instructions. I just followed them successfully. These are very useful and I’ll most certainly forget them by next upgrade. Does anyone know if we can get these put on the website, perhaps here?

Also, I launch it from Windows Terminal Preview so an additional step I had to do was go into the Terminal Preview settings and find Fedora-42 and rename it to 43.