Forum / NoMachine for Linux / ‘Authentication failed, please try again’ on Ubuntu 22.04
- This topic has 5 replies, 5 voices, and was last updated 11 months ago by Britgirl.
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July 12, 2023 at 07:39 #44856leonkParticipant
Hello, I have a weird problem when I want to change settings in NoMachine.
I get the error:
Authentication failed, please try again.
My password is working in the terminal, etc. On the second machine, I have the same configuration and don’t have this error. I have researched the forum and the internet, trying different approaches like:
– https://forum.nomachine.com/topic/authentication-failing-when-unlocking-to-change-server-preferences
But I still get the same error. I have tried rebooting, restarting, and reinstalling NoMachine. Additionally, I noticed that I must log out with my Ubuntu by [removed] when I connect with NoMachine, or else I get an extended desktop. Below is a step-by-step guide for how I installed NoMachine on my Ubuntu:
– I installed Ubuntu Server minimal, and then:
# 1. Update your package lists
sudo apt update
# 2. Install LXQt
sudo apt install lxqt
# 3. Install Xorg (if not installed)
sudo apt install xorg
# 4. Download NoMachine package
wget https://download.nomachine.com/download/8.5/Linux/nomachine_8.5.3_1_amd64.deb
# 5. Install NoMachine package
sudo dpkg -i nomachine_8.5.3_1_amd64.deb
# 6. Fix missing dependencies
sudo apt -f install
July 28, 2023 at 17:47 #45005AxiomOfChoiceParticipantI can confirm this problem persists for me on NoMachine 8.8.1, on Ubuntu 22.04. Really wish anyone could help with it.
October 10, 2023 at 13:57 #45642BritgirlKeymasterWe are not able to report your exact same error, but there is a similar issue which is reported here but related to the Moonlight theme: https://kb.nomachine.com/TR01U10758 which is linked in the topic from those listed above (https://forum.nomachine.com/topic/ubuntu-22-04-1-lts-authentication-failed-when-asked-for-admin-password).
What you could check is whether installing zenity helps,
sudo apt install zenity
. If that doesn’t help, update to NoMachine 8.9 and let us know if the problem persists.October 27, 2023 at 20:15 #45822kirk_gremParticipantI get this issue also on ubuntu 22.04 lts. I am running the “unity” desktop (no moonlight theme), and that may itself be the issue, as I can’t get VNC nor RDP to work either (for those I have performed the “keyring dance” which seemed to work ok). I tried the suggestion to install Zenity, but that had zero effect. If I didn’t dread the idea of setting back up all my RAID arrays, I would switch to Mint, and I may have to in the end. Does anyone know why this is occuring? Can I fix it by switching to xfce desktop?
November 1, 2023 at 08:12 #45880epiphany123Participant@Britgirl – I am reproducing this problem as well on 22.04.3 with Wayland. You can use the same log for referencing – https://forum.nomachine.com/topic/how-to-speed-up-nm-server-startup-at-boot#post-45867
December 22, 2023 at 10:51 #46452BritgirlKeymasterPlease try the workaround here: https://forum.nomachine.com/topic/how-to-speed-up-nm-server-startup-at-boot#post-46160
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