What is MSIX?

MSIX is a modern application packaging format and development framework positioned as the future application packaging format. When combined with MSIX app attach, it provides a modern and dynamic application delivery mechanism.

MSIX offers a container-based packaging solution for Windows applications, simplifying the application installation process for IT admins and users. Applications packaged using MSIX run in a lightweight application container. The MSIX app and child processes run inside this container and are isolated using the filesystem and registry virtualization rather than natively on the operating system.

MSIX applications can read the global registry. Additionally, an MSIX app writes to its own virtual registry and application data folder. This app data is then deleted when the app is uninstalled or reset using the apps and features settings page. Other applications do not have access to the virtual registry or virtual filesystem of an MSIX application...