Right-click the file and choose ‘Install’ (not ‘Open’). If you don’t see ‘Install’, double-clicking actually works if the App Installer is present. But if you get the ‘how to open’ prompt, that means Windows doesn’t recognize the handler.
If the GUI fails or you are trying to automate an installation, PowerShell is your best friend. This method bypasses many common interface bugs. run msixbundle
An .msixbundle is a modern Windows installer (like an improved .exe or .msi ). It contains packages for different CPU types (x64, ARM) and often auto-detects your system. run msixbundle
Once finished, you can launch the app directly from the installer or the . Method 2: Using PowerShell (For Advanced Users) run msixbundle