OE update installing 1


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There is WAY too much verbage and detail on changing environments, etc. for platforms that no longer are in use. People are mostly unwilling to read more than will fit on a cell phone screen. Or a tweet. My suggestion is to give the simplest instructions possible for Windows 10 here, with links to older platform installation details on separate pages.

Possible problems should also be links to separate pages, since they are highly dependant upon the exact platform.

back to index page https://openeuphoria.org/wiki/view/OE%20documentation.wc


To install Euphoria, consult the instructions below for your particular operating system.


Euphoria should run on all Windows versions that Microsoft supports. Currently, most users use Windows 8 or 10. Testing is done on Windows 10.

All versions other than Windows 95 work without problems. To use Windows 95, it must have Internet Explorer version 4 or higher installed (included in service pack 2.5). To use the new socket functions you will also Windows 2000 or later. To use all of the new standard library functions you will need at least Windows XP or later.

Euphoria is frequently tested on Windows versions: XP, Vista, 7.

To install Euphoria on Windows, visit the following URL:

The "Standard" version is a complete Euphoria installation, with Interpreter, Binder, Translator. Included are demo programs and documentation.

The "Open Watcom" version has the contents of the "Standard" version, plus a bundled compiler. This is a convenient way of producing compiled executables from Euphoria programs.

Download the latest Windows installer found under the Binary Releases heading of the Current version of Euphoria. Run the program and follow the prompts to get Euphoria installed.

The installer copies the required files; adds the binary subdirectory to your path, if you leave 'update environment' checked; and if you leave 'Associate file extensions' checked, it associates icons and various actions to Euphoria file extensions. Please do not open 'Euphoria Console Files' from Explorer; they are meant to be run from the command line.

The installer does not set the environment variable EUDIR to the Euphoria directory even though many third-party programs expect that to be set. This is so an older version of EUPHORIA can also still work on the same system. To set this variable please see the section "How to manually edit your environment in Windows" below.

Possible Problems

  • On Windows XP/2000, be careful that your PATH and EUDIR do not conflict with autoexec.nt, which can also be used to set environment variables.
  • On WinME/98/95 if the install program fails to edit your autoexec.bat file, you will have to do it yourself. Follow the manual procedure described below.
  • Euphoria cannot be run under Windows 3.1 and some unpatched versions of Windows 95 will not be able to run EUPHORIA 4.0.
  • You have two EUPHORIA installs and you want to change the environment to use another EUPHORIA.

How to manually modify the environment in Windows

Your EUPHORIA installation directory by default will be C:\Euphoria. It is possible to install to %PROGRAMFILES%\Euphoria, or anywhere you wish. Careful when using the %ProgramFiles% special location (C:\Program Files on most systems in English). The %ProgramFiles% directory invariably contains spaces by default. It is a good idea to use the short 8.3 version of the name, or surround with double quotes. Ofcourse, you'll just have to substitute your real installation directory for the C:\EUPHORIA examples below.

How to manually modify the environment in Windows (Windows NT/2000/XP)

On Windows XP select: Start Menu -> Control Panel -> Performance &Maintenance -> System -> Advanced then click the "Environment Variables" button. Click the top "New..." button then enter EUDIR as the Variable Name and c:\euphoria (or whatever is correct) for the value, then click OK. Find PATH in the list of your variables, select it, then click "Edit...". Add ;c:\euphoria\bin at the end and click OK.

On Windows Vista, You'll find the environment variables available at Start Menu -> Control Panel -> "System and Maintenance" -> "System" -> "Advanced system settings" -> "Environment Variables" (button)

Other versions of Windows will have the environment variables somewhere in the control panel.

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