Hello Dai,
I just tested the 5 steps listed in the guide on my Gnome Machine running Zorin 18.1. It works for me.
Please follow steps 1 through 5 one by one:
To check the repo package’s integrity - Copy in the terminal and execute: echo "0b14e71586b22e498eb20926c48c7b434b751149b1f2af9902ef1cfe6b03e180 protonvpn-stable-release_1.0.8_all.deb" | sha256sum --check -
Install the Proton VPN repository containing the app - Copy in the terminal and execute: sudo dpkg -i ./protonvpn-stable-release_1.0.8_all.deb && sudo apt update
Install the app - Copy in the terminal and execute: sudo apt install proton-vpn-gnome-desktop
Maybe use the Blockquote tool (5th from left in reply box toolbar) in future to distinguish commands themselves for cut-and-past to terminal, instead of Bold/Italic.
They will then follow the formatting norm for...
commands
that you may see in other threads.
(Just a hint. No criticism of your post. Zab)
EDIT: I now see some others using Preformatted Text tool (6th from left in reply box toolbar) for...
dai@dai-Aspire-A515-44:~$ echo "0b14e71586b22e498eb20926c48c7b434b751149b1f2af9902ef1cfe6b03e180 protonvpn-stable-release_1.0.8_all.deb" | sha256sum --check -
protonvpn-stable-release_1.0.8_all.deb: OK
dai@dai-Aspire-A515-44:~$ sudo dpkg -i ./protonvpn-stable-release_1.0.8_all.deb && sudo apt update
[sudo] password for dai:
(Reading database ... 295621 files and directories currently installed.)
Preparing to unpack .../protonvpn-stable-release_1.0.8_all.deb ...
Unpacking protonvpn-stable-release (1.0.8) over (1.0.8) ...
Setting up protonvpn-stable-release (1.0.8) ...
Hit:1 Index of /ubuntu noble InRelease
Hit:2 Index of /ubuntu noble-updates InRelease
Hit:3 Index of /ubuntu noble-backports InRelease
Hit:4 https://brave-browser-apt-release.s3.brave.com stable InRelease
Hit:5 Index of /zorinos/apps/ubuntu noble InRelease
Hit:6 Index of /zorinos/drivers/ubuntu noble InRelease
Hit:7 Index of /ubuntu noble-security InRelease
Hit:8 Index of /zorinos/patches/ubuntu noble InRelease
Hit:9 Index of /zorinos/stable/ubuntu noble InRelease
Hit:10 https://packages.mozilla.org/apt mozilla InRelease
Hit:11 Index of /stable/ noble InRelease
Hit:12 Index of /patches/ noble InRelease
Hit:13 Index of /apps/ noble InRelease
Hit:14 Index of /drivers/ noble InRelease
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
8 packages can be upgraded. Run 'apt list --upgradable' to see them.
dai@dai-Aspire-A515-44:~$ sudo apt install proton-vpn-gnome-deskto
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package proton-vpn-gnome-desktop
dai@dai-Aspire-A515-44:~$
It fails at:
dai@dai-Aspire-A515-44:~$ sudo apt install proton-vpn-gnome-desktop
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
E: Unable to locate package proton-vpn-gnome-desktop
dai@dai-Aspire-A515-44:~$
Do you have ever tried to add another repository/ppa to see if it works at all to add sources?
You could test it with another repository, and look, if it is shown then in the list when you run sudo apt update
to find out if it is a problem with proton vpn or a more general one.
You could e.g. test it with the zorin apt package of firefox.
Hello,
That's really strange; let's try to investigate further.
Please run the following commands.
Verification and repair of the repository:
ls /etc/apt/sources.list.d/protonvpn-stable.sources
If the command returns “No such file or directory,” the repository is not installed.
Your last download is:
2026-08-07 09:45:15 (11.4 MB/s) - ‘protonvpn-stable-release_1.0.8_all.deb.4’ saved [4852/4852]
You run the "check" and "dpkg" with protonvpn-stable-release_1.0.8_all.deb, without .4, Why?
--> Please run the "check" and "dpkg" with protonvpn-stable-release_1.0.8_all.deb.4
I see in the log
8 packages can be upgraded. Run 'apt list --upgradable' to see them.
