Set version to WSL '1' fails with 'Invalid command line option'

[daldr-ntml]

Windows 11 build 10.0.22000

Hi, we have installed WSL with Ubuntu 22.04 on Windows 11 on one of our engineer's laptops. We set the default version to 1 before installing Ubuntu (from an admin cmd prompt):

wsl --set-default-version 1

but Ubuntu still ended up being version 2. From a non-admin command prompt:

  NAME            STATE           VERSION
* Ubuntu-22.04    Stopped         2

We want WSL version 1. So we execute:

wsl --set-version Ubuntu-22.04 1

from a non-admin cmd prompt. That gives:

Invalid command line option: --set-version

Why does that command fail?