# 3D Slicer won't open due to libssl on Ubuntu 24.04 LTS

**URL:** <https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987>\
**Category:** Support\
**Tags:** installation\
**Created:** [May 11, 2026, 3:52pm UTC](https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987 "2026-05-11T15:52:40Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![dvijay](https://avatars.discourse-cdn.com/v4/letter/d/c6cbf5/32.png) [@dvijay](https://discourse.slicer.org/u/dvijay)\
**Post date:** [May 11, 2026, 3:52pm UTC](https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987/1 "2026-05-11T15:52:40Z")

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**OS** : Ubuntu 24.04.3 LTS

**Slicer** : 5.10.0-linux-amd64

Installation method:

```auto
cd ~/Downloads
tar -xvf Slicer-5.10.0-linux-amd64.tar.gz
sudo mv ./Slicer-5.10.0-linux-amd64 /opt/Slicer-5.10.0-linux-amd64
sudo apt-get install libglu1-mesa libpulse-mainloop-glib0 libnss3 libasound2t64 qt5dxcb-plugin

```

Error while launching:

`/opt/Slicer-5.10.0-linux-amd64/bin/SlicerApp-real: error while loading shared libraries: libssl.so.1.1: cannot open shared object file: No such file or directory`

- How do I fix this? Some online search suggested that having system wide installation of lower libssl might cause stability issue with other things.
- Shouldn’t this be already present in the /lib folder under Slicer and why doesn’t it work out of box?

It did work for a while and sometime during one of the regular system updates from Ubuntu it stopped working.

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [May 11, 2026, 4:16pm UTC](https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987/2 "2026-05-11T16:16:25Z")

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Hmm, it “works for me” on a couple 24.04.3 machines.

Are you starting `SlicerApp-real` instead of `Slicer`? (`Slicer` is the launcher that sets the paths).

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<div class="post-metadata">

**Author:** ![dvijay](https://avatars.discourse-cdn.com/v4/letter/d/c6cbf5/32.png) [@dvijay](https://discourse.slicer.org/u/dvijay)\
**Post date:** [May 11, 2026, 4:19pm UTC](https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987/3 "2026-05-11T16:19:41Z")

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I am running `Slicer` present in the directory root and not `SlicerApp-real` in its bin.

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [May 11, 2026, 4:23pm UTC](https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987/4 "2026-05-11T16:23:05Z")

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I would not suggest moving the application to /opt. Slicer does not work that way.

Install in your user space, without sudo and retry and report.

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<div class="post-metadata">

**Author:** ![dvijay](https://avatars.discourse-cdn.com/v4/letter/d/c6cbf5/32.png) [@dvijay](https://discourse.slicer.org/u/dvijay)\
**Post date:** [May 11, 2026, 4:35pm UTC](https://discourse.slicer.org/t/3d-slicer-wont-open-due-to-libssl-on-ubuntu-24-04-lts/46987/5 "2026-05-11T16:35:52Z")

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Yes, that worked, thanks a lot! 🙂