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How Do I Set an Environment Variable in WiX?

Last updated on October 1, 2022 @ 5:48 am

Environment variables are used to store data that can be used by multiple programs on a computer. They can be used to store data such as the location of files, the location of user profiles, and much more. Setting an environment variable in WiX is a two-step process.

The first step is to create a new environment variable. To do this, open the Environment Variables dialog box. This can be done by going to Control Panel > System and Security > System > Advanced system settings > Environment Variables.

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In the Environment Variables dialog box, click on the New button under the User variables section. In the Variable name field, enter the name of the environment variable you want to create.

In the Variable value field, enter the value you want to assign to the environment variable. Click OK to save your changes.

PRO TIP: Warning:

This article describes how to set an environment variable in WiX. However, it is important to note that modifying environment variables can potentially break installed applications. Therefore, it is recommended that you only set environment variables when absolutely necessary, and that you backup your system beforehand.

The second step is to reference the environment variable in your WiX code. To do this, add a new element calledEnvironment under the element in your WiX code.

The name attribute of this element should be set to the name of the environment variable you created in Step 1. The value attribute should be set to [%ENVVARNAME%], where ENVVARNAME is replaced with the actual name of your environment variable.

For example, if you created an environment variable called MyVariable in Step 1, your WiX code would look like this:

Conclusion: Setting an environment variable in WiX is a two-step process. First, you must create a new environment variable using the Environment Variables dialog box. Second, you must reference the environment variable in your WiX code by adding an element called Environment under the element.

Madison Geldart

Madison Geldart

Cloud infrastructure engineer and tech mess solver.