Hello,
the command to add a user in openmamba is  useradd. See also man useradd.

You need to install KDE Plasma 6 because you used rootfs-base for the installation`? The command is:

sudo dnf install desktop-base-kde

If you need the graphical login manager also sudo dnf install sddm may be needed.

User Fixed =) and i have a working WSL version

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Do this as root user...

dnf install nano sudo systemd

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Do this as root user...

Set password for root and add user.

Paste one by one in Console and change <username> to your name.

passwd
useradd -m -g users -G wheel -s /bin/bash <username>
echo "%sudo ALL=(ALL) ALL" >/etc/sudoers.d/Wheel
passwd <username>
usermod -aG wheel <username>

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Do this as root user…

Open this file via Terminal and add: nano /etc/wsl.conf

[user]
default=adolf <-- change to your user.

[boot]
systemd=true

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Do this as root user…

Open this file via this line in terminal

EDITOR=nano visudo

and add your username under root like this.

root ALL=(ALL) ALL
adolf ALL=(ALL) ALL

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Reboot OpenMamba - Reboot OpenMamba - Reboot OpenMamba - Reboot OpenMamba

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Login as normal user and update all!

sudo dnf update

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There is some more lines but i will make an guide =)

Good. User can just be added to the sysadmin group to give root permissions with sudo, adding to this group is also recommended for polkit policies.