Add-AppxPackage -Path "C:\Downloads\MyApp.msix"
By default, MSIX packages install only for the current user. To "provision" an app so it is available to every user who logs into the machine, you must use the Add-AppxProvisionedPackage cmdlet with administrative privileges: install msix powershell
Replace "C:\Path\To\YourApp.msix" with the actual path to your MSIX file. Add-AppxPackage -Path "C:\Downloads\MyApp