Festo Fluidsim Change Language -

4/5 – It works perfectly for what it does, but the lack of an in-software switcher feels outdated. If you frequently switch between languages, create desktop shortcuts for each language once, and it becomes a 10‑second task.


Final note: The exact file names or shortcuts vary slightly between Fluidsim 4, 5, and older versions (e.g., Fluidsim 3.6). If you cannot find LanguageSelection.exe, look for a folder named Lang inside the installation directory.


  • Help files and documentation may be distributed separately; changing the program UI language does not always automatically swap the help/manual language unless the corresponding language pack is installed for documentation.
  • Some FluidSim 5.x and 6.x installations include separate language shortcuts: Festo Fluidsim Change Language

  • Click the desired shortcut – FluidSim will launch directly in that language.
  • Older or educational versions of Fluidsim (especially 4.2) do not have a language option inside the main editing window. Instead, the language is set at the very start.

    Step 1: Close any open Fluidsim project. Return to the main start screen (the window that appears immediately after launching the program). ⭐ 4/5 – It works perfectly for what

    Step 2: Look at the bottom-left or bottom-right corner of the start screen. You should see a small flag icon or a dropdown menu labeled "Language".

    Step 3: Click the flag or dropdown. Select your preferred language (e.g., English, German, French). Final note: The exact file names or shortcuts

    Step 4: The interface will immediately switch, or you may be prompted to restart the application.

    Festo Fluidsim is a powerful simulation software used worldwide for teaching and learning pneumatics, hydraulics, and electrical engineering. Whether you are using Fluidsim 4.2, Fluidsim 5.0, or a newer version, changing the interface language is a common need, especially for multilingual classrooms or personal preference.

    This article covers all known methods to change the language in Festo Fluidsim, from the standard in-app menu to configuration file editing and registry tweaks.