MSIX Packaging tool enables you to repackage your existing classic applications to MSIX format. You can run your desktop application installers through this tool and obtain an MSIX package that you can install on your machine or upload to the Microsoft Store.

Prerequisites:

• Windows 10, version 1809 (or later)
• Participation in the Windows Insider Program (if you’re using an Insider build)
• A valid Microsoft account (MSA) alias to access the app from the Microsoft Store
• Admin privileges on your PC account

See documentation at aka.ms/MSIX.