The most common reason is that the app uses special features that App Installer isn’t allowed to support. Other possible reasons include not having Developer Mode turned on, using an outdated version of App Installer, or issues with how the app was signed. Here are a few simple steps you can try to fix this problem in Windows 11:
1. Enable Developer Mode in Windows
To install the app package, you first need to enable Developer Mode. This setting gives your PC permission to run additional development tasks, including installing apps from any source. Following these steps should allow the app package to be installed successfully.
2. Install the App Package Using PowerShell
If the regular installer still doesn’t work, you can try installing the app package using PowerShell. Sometimes, the App Installer cannot find the package file, but using PowerShell lets you provide the correct file path directly.
