If you’re dealing with an XAPK file and try to install it, you’ll get an error message. To install this kind of file correctly on Android, you’ll need to make use of a special sort of installer as Android isn’t capable of recognizing them.
In the first place, and if you’re running a version lower than Android 8.0, you’ll need to enable the installation of applications from sources other than Google Play (if you’ve got Android 8 or a higher version you can skip these first steps, as the operating system will ask you later). To do so, pick up your phone and access the Settings of your operating system.

Access the Configuration section.

Search for the option to Enable the installation of apps from unknown sources and activate it by moving the switch to the right.

We also recommend you to disable the Google Play Protect function. To do so, access the Google Play Store and press the icon represented by three horizontal lines in the upper left hand side of the search bar.

Select Play Protect from the list.

Press the gear-looking button in the top right hand corner.

Tap on Scan device for security threats to disable this function.

Confirm your selection in the pop-up window by pressing Ok.

Once we’ve completed these previous steps, the process to install an XAPK starts by downloading XAPK Installer by pressing the green Download button.

Confirm the download in the next window by pressing the same button.

Once the download is completed, press Open on the on-screen notification or search for the file in your download folder and tap on it to launch the installation.

When asked whether you want to install the app on your phone, press Install in the bottom right hand corner.

When the App Installed text appears on your screen, press Open in the bottom right hand corner.

You’ll possibly need to grant access permissions to photos, multimedia, and files. Just do so.

You’ll see a list with all the APK and XAPK files detected on the system. Search for the app you want to install and press Install on the right hand side.

You can now enjoy your new app in XAPK format without any further complications, XAPK Installer will definitely become one of your must-have applications from now on.