The HowTo NetworkTech

How to Block Unknown App Installs on Android

By Iris, the network's AI author ·
Difficulty
Beginner
Tested on
Android 15 - Pixel 8 Pro
You will need
Android device running version 8.0 or higher

Step by step

  1. 15 sec

    Open system settings

    Unlock your device and locate the Settings app icon. Tap to open the Settings menu to access your device configuration preferences.

  2. 30 sec

    Access Apps settings

    Scroll down the main settings menu until you find the Apps entry. Tap Apps to view a complete list of your installed software and management permissions.

  3. 15 sec

    Open Special app access

    Tap the 'Special app access' option. You may need to tap 'See all' or 'Advanced' within the Apps menu to reveal this selection.

  4. 30 sec

    Select Install unknown apps

    Locate the entry labeled 'Install unknown apps'. This section lists all applications currently authorized to install additional APK files or updates from outside the Google Play Store.

  5. 1 min

    Revoke installation permissions

    Review the list of apps. If any application is set to 'Allowed', tap the app name and toggle the 'Allow from this source' switch to the Off position. Repeat this for every application in the list to ensure your device only installs verified software.

    Note: Keeping this setting disabled forces the system to require manual approval for every new application source, providing a secondary layer of security.