Fix: “This app package is not supported for installation by App Installer” Error

The “This app package is not supported for installation by App Installer” error appears when users attempt to install various types of applications on Windows. Most of these errors stem from app packages in MSIX format, which is a modern packaging experience that allows users to install files in addition to Windows apps. When they try to install these apps, the error code appears on their screen, suggesting that the app package cannot be installed.

One of the causes of this issue could be that Developer Mode is turned off. This is most likely preventing you from installing the packages because the installer cannot make changes to your computer. Another cause could be that the installer is not finding the path of the app package.

Here is a list of methods that will help you fix this Windows 11 problem:

1. Enable Developer Mode in Windows.

To install the app package you desire, you must enable Developer Mode. This mode allows you to make more changes to your computer by enabling debugging and providing additional deployment options.

This should be enough to complete the app package installation because it will allow it to make the necessary changes.

You can enable the Developer Mode from the Windows Settings on your computer.

Here is a guide that will show you how to do this:

1. Press the Windows key + R to open a Run dialog box.
2. Type “ms-settings:” in the search bar and press Enter to open the Windows Settings.

   

3. Now select the Privacy & security section.
4. You need to click on the For developers button.

   

5. You will see the Developer Mode option. Click on the toggle next to it to enable the option.

   

6. Close the settings and run the app package again to see if the “This app package is not supported for installation by App Installer” error still occurs.

2. Install it using PowerShell.

You can use a different method besides the classic one to install this app package. The installer might not work because it is unable to find the path of the app package.

You can force the installer to use the correct path by using PowerShell. All you need to do is open it with admin privileges and insert code that contains the exact path.

Here are the steps you need to follow to do this:

1. Open a Run dialog box by pressing the Windows key + R.
2. Inside the search bar type ‘PowerShell‘ and press the CTRL + Shift + Enter keys to open it with administrator privileges.

   

3. Click on ‘Yes‘ when prompted by the User Account Control (UAC).
4. Now, you need to go to the app package that you want to install, right-click on it, and then click on “Copy as path.

   

5. Go back to PowerShell and paste the following code, followed by the path you have copied:

   Add-AppxPackage (path)

   

6. Press Enter and wait until the process is complete.
7. When it is done, search for the app you have wanted to install within the taskbar to see if the issue has finally been fixed.