Microsoft to Deprecate PowerShell MSI Installer in Favor of MSIX Package Starting April 2026

Microsoft has announced a significant change to the installation method for PowerShell on Windows, with the MSIX package set to become the primary installation method. This transition will commence with the release of PowerShell 7.7-preview.1, which is scheduled for April 2026. Following this update, Microsoft will cease shipping the traditional MSI installer package for new PowerShell versions.

The shift to MSIX aims to streamline the installation process and leverage modern packaging technologies available on the Windows platform. The MSIX format offers several advantages, including improved reliability, enhanced security features through containerization, and a more efficient update mechanism. This move aligns with Microsoft's broader strategy to standardize application packaging and deployment across its ecosystem.

Users and system administrators currently relying on the MSI installer for automated deployments or specific organizational requirements will need to adapt their processes before April 2026. Microsoft is expected to provide documentation and guidance to facilitate a smooth transition to the MSIX-based installation. The company's announcement underscores its commitment to evolving PowerShell's deployment strategy to better integrate with contemporary Windows environments and deployment practices.