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wix4 wixproj document element name 'Project' is invalid

When trying to build a wix4 project using a the new wix toolset provided like this:

wix build -d Configuration=Debug MySetup.wixproj

I get this error:

error WIX0048: The document element name 'Project' is invalid. A WiX source file must use 'Wix' as the document element name.

The project consists of 5 files. The wixproj file which I suspect will orchestrate the build. 3 wxs one that defines the basics from the setup and 2 which are filled up automatically by the HeatDirectory (defined in the wixproj). And last file is a xslt.

Those files have been migrated from wix3 using the VS 2022 HeatWave extension.

Did the migration miss some step or should I call the build in a different way?

To me looks like the wixproj file is missing some basic info to let the wix build command to work properly.

Solution

  • wix build is for building WiX source files without MSBuild. To build a .wixproj, use msbuild or dotnet build.