MSIX-to-CIM

MSIX to CIM Conversion Utility

Script designed for AVD (Azure Virtual Desktop) App Attach This utility transforms standard MSIX/APPX packages into .cim (CIMFS) images

✨ Key Features

• GUI Integration: Browse and select MSIX/APPX packages using a native Windows File Explorer dialog.
• CIMFS Optimisation: Configured to use parameters (-filetype CIM and -rootDirectory apps) to ensure quick mounting
• Dependency Monitoring: Automatically scans and highlights package dependencies in green within the console
• Permission Integrity: Utilises the -applyACLs flag to preserve original NTFS file permissions within the final image.
• Workspace Management: Intelligent logic verifies and creates the C:\cim output environment if it does not already exist.

📋 Prerequisites

• Permissions: Must be executed with Administrator privileges.
• Dependencies: Requires msixmgr.exe to be located in C:\msixmgr\.
• Signing: The source MSIX package must be digitally signed (e.g., using a *.pfx) before conversion.

🚀 Usage Instructions

1. Launch PowerShell as Administrator.
2. Navigate to the folder and execute the script:

   .\MSIX-to-CIM.ps1

3. Select your target .msix package via the file picker.
4. Input a name for your output image (extension handled automatically).
5. Retrieve your *.cim from C:\cim.

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Developed by Aftab Khan | February 2026