Workaround for libssl issue on Ubuntu 22.04

Hi all. If when opening the editor on the new LTS 22.04 you get the error 'No useable version of libssl' it's due to a change in the libssl version.
The fix that worked for me was manually downloading the 'libssl1.0.0_1.0.2n-1ubuntu5.8_amd64.deb' package from http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0/

NOTE: download the right version for your architecture

then, in the download location:
sudo dpkg -i libssl1.0.0_1.0.2n-1ubuntu5.8_amd64.deb

restart the unity editor and hopefully you're back in the game.

 

Hi, I had the same problem and I fixed it. Additionally it can help to use the .NET 3.1 Version (just delete your current .net version and install the 3.1 one) and to delete your old libssl version.
libssl 1.1.1 also works with Unity 2021.3.1f1.

 

The issue right now is that we currently use .NET 5 in the Linux builds, which dynamically loads either OpenSSL 1.0 or 1.1. But Ubuntu 22.04 only includes OpenSSL 3.

We are definitely aware of it and are considering a few solutions.

 

Are guys able to install Plastic SCM on Ubuntu 22.04? It's currently the only issue that is preventing me from dropping Windows right now

 

Thanks a lot, Alfie.

Before doing so, I also had to

sudo apt install libssl-dev

.

So if another one of you is having trouble doing that, maybe that'll solve it.

 

Sorry, just to add that I now have this problem on my Ubuntu 22.04 - I really would like some sort of fix asap!

 

Here is a fix that will allow you to run the editor
if your using i386 just replace the _amd64.deb with _i386.deb

wget "http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0.0_1.0.2n-1ubuntu5.10_amd64.deb"
wget "http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0-dev_1.0.2n-1ubuntu5.10_amd64.deb"
sudo dpkg -i libssl1.0.0_1.0.2n-1ubuntu5.10_amd64.deb
sudo dpkg -i libssl1.0-dev_1.0.2n-1ubuntu5.10_amd64.deb

 

Thank you! I am now on version 1.0.2
And thank you for your service

 

I just started getting this error out of the blue on Pop!_OS 22.04 LTS after working with Unity on Linux for over 4 months now.

 

Did you fix it?

 

I have it working. I couldnt remember my exact steps but i posted about it plastic scm forums.
https://forum.plasticscm.com/topic/...ete-on-ubuntu-22-it-depends-on-liblttng-ust0/

 

This is still an issue as of today, but the fix in the very first comment worked for me. The version number has changed though; right now you need to go to http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0/ and download the file named libssl1.0.0_1.0.2n-1ubuntu5.10_amd64.deb.

 

Still an issue, the Unity Hub doesn't even load on a fresh install of 22.04. Sits there with the Unity logo and a spinning circle beneath it doing nothing. No errors, no activity, no sign of life. If this was your first impression of Unity, it would not be a good one...

Fortunately I've been using Unity on 22.04 for a few months now... so I knew it *should* work. The difference I now know, is that my old PC had been upgraded from 20.04- > 21.04 -> 21.10 -> 22.04 so it must have had older libs in place that Unity needs.

On my fresh install of 22.04 and figuring it was the Hub that was at fault, I eventually realised I could install Unity without the Hub and going through the manual license activation got to my project with the libssl error in the editor. Finally, an actual error message! That lead me here and to the fixes above - thank you all!

With the older libssl installed, the Hub actually loads.

 

This worked for me thank you! I am running Pop 22.04 LTS

 

What can I do when I'm running Fedora 36? Downgrading openssl to 1.1 would probably break my system. The log file looks like this: https://pastebin.com/26aud3ZM (I have a valid PRO license btw).

 

I'm running Fedora 36 and I didn't have to do anything special to get the official Unity Hub package working.

 

Hello @KevinWelton , do you have any update on the issue? It would be great if you had a ticket where we can follow the progress on the issue.

Meanwhile I added openssl-1.1 to the AUR package for arch distros.
https://aur.archlinux.org/packages/unityhub

 

I'm on Linux Mint and I think it was a kernel update that made this start appearing randomly after a reboot just now. Even though I'm on 5.15 I will try:

wget http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0.0_1.0.2n-1ubuntu5.10_amd64.deb
sudo dpkg -i libssl1.0.0_1.0.2n-1ubuntu5.10_amd64.deb

Yeah this seems to work.

 

Your welcome

 

thank you so much, this fix helped me and fixed the problem perfectly
IMPORTANT NOTE:
Do not install the .udeb version, install the .deb version that he mentioned based on your cpu arch

 

thanks a lot...problem fixed

 

this also worked for me on 22.04 LTS, thanks

 

Hi everyone, I'm on 22.04.1 LTS and installing the older libssl package did not work for me unfortunately. The error persists and I'm out of ideas at this point, as most other online discussions about this problem lead back to this forum thread...

 

I'm also running 22.04.1 LTS and the initial solution worked for me. Just make sure to not download the -dev version!
At first I mistakenly downloaded libssl1.0-dev_1.0.2n-1ubuntu5.10_i386.deb which didn't solve my problem.
Once I installed libssl1.0.0_1.0.2n-1ubuntu5.10_i386.deb, Unity was up and running!

 

I am having the same problem, and have followed the instructions listed above. In addition, I have done sudo apt-get check and sudo apt --fix-broken install both of which upgraded some packages and removed others. I am running on an Intel Processor, so I used the libssl1.0.0_1.0.2n-1ubuntu5.10_i386.deb but Unity Editor still reports "No usable version of libssl was found" error (on a beginner 3D template). Are there other ways in Ubuntu 22.04 to find out what is broken or what is missing?

 

The problem doenst exist with Unity 2022.2.2.
Works great on Ubuntu 22.04 with libssl3
Unity 2021 doesnt work on same system because of libssl3

 

Thank you! Installing 2022.2.0b works for me without messing about with libssl!

 

Worked for me !!!
I'm using Ubuntu 22.04.1 LTS and unity 2021.3.16f1.

 

It worked, thanks very much.

 

Hi Linux Mint community!
For editor version: 2021.3.16. Fixed by this answer. With .gpg keyring warning for Mint 21.1 but it's works anyway.

 

Simply just open terminal and copy paste text below and it will solve libssl problem.
echo "deb http://security.ubuntu.com/ubuntu focal-security main" | sudo tee /etc/apt/sources.list.d/focal-security.list
sudo apt-get update
sudo apt-get install libssl1.1

 

Thanks mate, tried a bunch of fixes and no joy, but this got it working quick and easy!

 

what's the latest solution of it? because i don't want to downgrade my openssl.

 

It is ridiculous that a year later this issue still exists. Upgrade to openssl3 Unity and make this problem go away.

 

Thank you!!!

 

on following the steps u had listed, i still get the error below

Selecting previously unselected package libssl1.0-dev:amd64.
dpkg: regarding libssl1.0-dev_1.0.2n-1ubuntu5.11_amd64.deb containing libssl1.0-dev:amd64:
libssl1.0-dev conflicts with libssl-dev
libssl-dev:amd64 (version 3.0.5-2ubuntu2.1) is present and installed.

dpkg: error processing archive libssl1.0-dev_1.0.2n-1ubuntu5.11_amd64.deb (--install):
conflicting packages - not installing libssl1.0-dev:amd64
Errors were encountered while processing:
libssl1.0-dev_1.0.2n-1ubuntu5.11_amd64.deb

 

I also faced a similar challenge on ubuntu 22.04.1 LTS and i just simply ran the following cli commands at once


sudo add-apt-repository ppa:rael-gc/rvm
sudo apt-get update
sudo apt install libssl1.0-dev

make sure you are connected to the internet.

 

For the ones who still facing the same issue, here are the steps I took to solve it

wget http://archive.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.0g-2ubuntu4_amd64.deb
sudo dpkg -i libssl1.1_1.1.0g-2ubuntu4_amd64.deb

I'm currently using ubuntu 22.04

 

Using package "libssl1.0.0_1.0.2n-1ubuntu5.11_amd64.deb" worked for me.
URL: http://security.ubuntu.com/ubuntu/pool/main/o/openssl1.0/

This is kind of crazy this this is still broken.

Using Unity 2021.3.22f1.
Do Beta or Alpha versions have this fixed?

 

Wow, you wrote this on the date 22.04

 

It really helps. Thank you!

 

I wish that was intentional

 

I'm having the same issue on Debian, but the only solutions listed here involve installing Ubuntu files. Is there a distribution-agnostic solution to 'No usable version of libssl was found'?

 

Ubuntu is the only distro official supported by a whole host of companies for client side software. From Unity, MS, Google, Chinese GPUs, etc.
I would stick with Ubuntu for game dev situations for many reasons. Not just Unity.

 

So today I decided to give Ubuntu 22.04 a try again and installed the unityhub 3.5.0, the hub just sits without opening or doing anything just a spinning wheel with a logo. I decided to try a few work arounds that are known of but still same issue, the fix for some reason if you never used the appimage you cannot agree to the terms and agreements..

1 sudo apt remove unityhub
2 sudo apt autoremove
3 https://public-cdn.cloud.unity3d.com/hub/prod/UnityHub.AppImage
4 right click that package /properties/permissions/allow exectuing file as program
5 open up the terminal browse to the folder where that package lives and do ./UnityHub.AppImage
6 you will be greeted with a nice agreement form agree
7 close the console
8.
wget -qO - https://hub.unity3d.com/linux/keys/public | sudo apt-key add -
sudo apt update
sudo apt-get install unityhub
unityhub

be patient the spinner will still go but eventually it will open up to a site for you to log in then launch the rest of the application.

 

I'm on Debian bookworm and I've managed to solve this by installing openssl1.1 from bullseye repositories.
Here are the links for openssl and its libssl dependency:

https://packages.debian.org/bullseye/openssl
https://packages.debian.org/bullseye/amd64/libssl1.1

Choose the ones for your architecture (will likely be amd64), and install them with

sudo apt install [path to openssl file] [path to libssl file]

(you must use paths, so if you are in the downloads folder, use ./filename for both files).

Recomendation to Unity: you may solve this by adding openssl1.1 and libssl1.1 packages on your ubuntu/debian repository and make unityhub depend on them.

 

thanks alot.... that worked for me