Before you can install files from your PC, you must unlock the device's developer settings. Microsoft Learn Windows 10 Mobile Update & Security For Developers and enable Developer Mode Windows Phone 8.1

: If an app still exists on the web version of the Microsoft Store, you can paste its URL here to get direct download links for the APPX installation files. Download Windows Phone Apps -XAP APPX Files- to PC

Tools like WPV XAP Deployer are popular because they can handle multiple file installations simultaneously, which the official Microsoft tool does not support. 3. Preparing the Phone Before you can install files from your PC,