: The primary source is the Windows Software Development Kit (SDK) . When installing, you only need to select the "Windows App Certification Kit" to get MakeAppx.exe without the full SDK's overhead.

To use the tool, open a Command Prompt or PowerShell and navigate to its folder (or add it to your System PATH).

: makeappx.exe pack /d "C:\MySourceFiles" /p "C:\Output\MyApp.msix"

MakeAppx.exe is a command-line utility used by developers to manage Windows app packages. Its main capabilities include:

: If you have Visual Studio installed, the tool is likely already on your machine as part of the "Universal Windows Platform development" workload.

Once installed, the executable is typically tucked away in version-specific folders. Common file paths include: