Fix: Installation of this app package is not supported

Microsoft distributes UWP (Universal Windows Platform) and desktop applications as .msixbundle. Apps and AppxBundle app packages in .Windows.

While the Msixbundle, Appx, and AppxPackage installers are reliable ways to sideload app packages, multiple users are unable to do so.

Why do I get an "App package is not supported" error?

Some of our readers have received "The app installer does not support installation of this app package" error when trying to sideload app packages, especially those downloaded from unofficial sources. There are several possible reasons behind this issue:

• Third-Party App Packages – App packages downloaded from third-party websites throw an “App package is not supported” error.
• Microsoft Store Does not support the installer – If the Microsoft Store does not support the Msixbundle installer, the app package will not be installed successfully.
• Restricted Installer Features – An installer with restricted features can also be the reason behind the error.
• Developer Mode Disabled – If you want to sideload the .msixbundle, Developer Mode should be active on your Windows machine. App and .AppxBundle application package on the computer.

Interestingly, there are several workarounds to resolve the installation error This app package is not supported in Windows 11.

How to fix app package not supported error?

1. Enable developer mode

1. Use the shortcut to launch the "Settings" application. WindowsI
2. Go to the Privacy & Security tab from the left sidebar and click on the For Developers option.
3. Turn on the developer mode switch.

2. Use Windows PowerShell to install the application package

1. Press to open Windows Search, type powershell in the Search column, and then click Run as administrator. WindowsS
2. Press the "is" button in the "User Operation Control" window.
3. Type or copy-paste the following command into the PowerShell window (replace the X:\Path\to\File.Appx string with the actual path to the app package on your system): Add-AppxPackage -Path X:\Path\to\File.Appx
4. Press the key to start the software package installation. Enter

#This time you won't get the "This package is not supported for installation" error. After the package is successfully installed, exit the PowerShell window and start the application.

To avoid dependency issues, install dependency packages before installing the main app package.

3. Using the App Installer

Note Before you start installing Microsoft’s official app installer on your Windows PC, it is recommended to create a restore point on your Windows PC.

1. Launch Microsoft Store from pinned apps in the Start menu and search "App Installer".
2. Press the Install Download button.
3. Launch File Explorer using the shortcut, navigate to the location of the .appx or .msixbundle package, and double-click one of them to launch the app installer. WindowsE
4. Finally, press the Install button located on the right button of the Application Installer dialog box.

Wait for the app installer to discover and download the base dependency package and the main app package. After successful installation, the application will automatically launch on your PC.

These two workarounds will help you overcome the error that this app package installation is not supported during sideloading the app package using the app installer.

While you are here, you may be wondering how to fix the "Cannot open this installation package" error using some simple methods.

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