MSIX documentation

MSIX is a Windows app package format that combines the best features of MSI, .appx, App-V, and ClickOnce to provide a modern and reliable packaging experience.

What's new for MSIX

Recent improvements to the MSIX and Windows App SDK ecosystem.

Packaging decision guide

Not sure which packaging model is right for your app? This new guide walks you through the decision — packaged, unpackaged, or packaging with external location.

WinApp CLI

The new WinApp command-line tool streamlines common MSIX packaging and signing workflows, including generating self-signed certificates and building packages from source.

Top tasks

Use MSIX on any platform

The MSIX SDK provides all of the APIs needed to verify, validate, and unpack an MSIX package on any platform, including non-Windows 10 platforms.

MSIX for IT pros

MSIX for developers