Application modernisation

PSF

Package Support Framework

A Microsoft open-source runtime that applies compatibility fix-ups to an MSIX-packaged application at runtime, such as file and registry redirection and working-directory correction, so a legacy app behaves correctly inside the container without changing its source code. EtherApps Forge can stage the framework as part of packaging.

PSF matters during Windows 11, Intune, Azure Virtual Desktop, and Cloud PC programmes because application blockers can delay the whole rollout. The practical question is whether the term helps capture, package, sign, deploy, or troubleshoot an app with less rework.