WiX XML output file
File type: Source code and script file
A .wixout file is an XML output file created by the WiX (Windows Installer XML) toolset for Microsoft Windows.
It contains the result of linking WiX object files and represents the linked installer output in XML form.
File type category:
Source code and script file
Date updated: September 28, 2026
WiX, originally developed by Microsoft, is an open-source toolset for building Windows Installer packages from XML source files. Its compiler produces object files, and the WiX linker combines those files into installer output.
A .wixout file is an XML representation produced by that linking process. It is a build output file rather than the usual distributable Windows Installer package, such as an MSI file.
The format is associated with the WiX toolset on Microsoft Windows. It remains a WiX-specific auxiliary format and is not intended as a general-purpose XML document format.
You can open a .wixout file in a text editor or XML editor to inspect its XML contents. On Microsoft Windows, the WiX toolset can create the file, but it is not normally used to open it for everyday editing.
A .wixout file is not an installer package and cannot be run as one.
A .wixout file is not normally converted to another file format. It is an XML representation of WiX linker output, not a general-purpose exchange document.
To produce an installable package, rebuild the project from its WiX source and object files with the WiX toolset and create the required Windows Installer output.
Software applications that handle other tasks involving wixout files:
Microsoft Windows
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