# URSim NO CONTROLLER

**URL:** <https://forum.universal-robots.com/t/ursim-no-controller/40963>\
**Category:** Technical Questions\
**Created:** [August 26, 2025, 1:58pm UTC](https://forum.universal-robots.com/t/ursim-no-controller/40963 "2025-08-26T13:58:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![937522036](https://avatars.discourse-cdn.com/v4/letter/9/c89c15/32.png) [@937522036](https://forum.universal-robots.com/u/937522036)\
**Post date:** [August 26, 2025, 1:58pm UTC](https://forum.universal-robots.com/t/ursim-no-controller/40963/1 "2025-08-26T13:58:08Z")

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![ef26bfc4-52dd-4839-9c8b-352dafa86f15](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/5/5eb962fbd8d1d7f28147d91594ab56e310f07c8d.jpeg) I am using Ubuntu 20.04 and following the solution provided on the official website. I am not sure if it is due to the command ‘sudo apt install libxml rpc-c++8v5: i386-y’, as when I enter this command in the terminal, it displays’ E ‘indicating that the package cannot be located. Therefore, I installed’ sudo apt install libxml rpc-c++8v5-y '.

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**Author:** ![thomas.denepoux.pro](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.universal-robots.com/thomas.denepoux.pro/32/7365_2.png) [@thomas.denepoux.pro](https://forum.universal-robots.com/u/thomas.denepoux.pro)\
**Post date:** [August 27, 2025, 8:32am UTC](https://forum.universal-robots.com/t/ursim-no-controller/40963/2 "2025-08-27T08:32:04Z")

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Hello,

This problem has happened to me before!  
What you need to do is:

1- Open the folder containing the URSim\_Linux-X.X.XX.tar.gz file via the terminal: cd FolderName

2- Extract the URSim\_Linux-X.X.XX.tar.gz file via the terminal: tar xvzf URSim\_Linux-X.X.XX.tar.gz

3- Open the extracted folder via the terminal: cd ursim-X.X.XX

4- Run the install.sh file via the terminal: ./install.sh  
This will create shortcuts on your desktop; you can delete them.

5- You can now launch Ursim via: ./start-ursim.sh

 ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/5/5f22d450b7fe4d0da3ea0c9855b3943112f4c2ad.png)

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<div class="post-metadata">

**Author:** ![937522036](https://avatars.discourse-cdn.com/v4/letter/9/c89c15/32.png) [@937522036](https://forum.universal-robots.com/u/937522036)\
**Post date:** [September 9, 2025, 1:35pm UTC](https://forum.universal-robots.com/t/ursim-no-controller/40963/3 "2025-09-09T13:35:13Z")

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Thank you, but it still cannot be resolved