To install an MSIX package using PowerShell, you can use the following command:
Last updated: March 2025. For the latest cmdlet parameters, run Get-Help Add-AppxPackage -Detailed in your PowerShell environment.
Add-AppxPackage -Path "C:\Downloads\MyApp.msix" -AllUsers install msix powershell
If you receive an error like "The root certificate of the signature is not trusted" , you must install the signing certificate before installing the MSIX.
If you encounter issues during installation (like the package already being installed), you might want to force the installation. However, use the -Force parameter with caution: To install an MSIX package using PowerShell, you
First, export the certificate from the MSIX (or obtain it from the publisher). Then add it to the store:
Get-AppxPackage -Name "MyCompany.MyApp" | Select-Object * If you encounter issues during installation (like the
Only trust certificates from legitimate sources.
MSIX is the modern Windows application packaging format that combines the best features of MSI, AppX, and ClickOnce. While double-clicking an .msix or .msixbundle file works for interactive installations, PowerShell provides a more powerful, scriptable, and automated approach—essential for IT pros, developers, and enterprise deployments.
Add-AppxPackage -Force -Path "C:\Path\To\YourApp.msix"
The basic command to install an MSIX package is through the Add-AppxPackage cmdlet. This cmdlet allows you to install an app package ( .msix , .appx ) on a local computer.