Can’t Install APK App Not Installed?

APK, APK Installations

Are you struggling with the “App Not Installed” error while trying to install an APK on your Android device? Don’t worry, you’re not alone.

This error can occur due to various reasons, but fortunately, there are easy solutions to fix it. In this tutorial, we will discuss the common causes and how to troubleshoot them.

What is an APK file?

An APK (Android Package Kit) file is a format used for distributing and installing applications on Android devices. It contains all the necessary files for an app to run on your device. You can download APK files from various sources other than the Google Play Store.

Causes of “App Not Installed” Error

There are several reasons why you might encounter this error:

  • The app is not compatible with your device’s operating system.
  • Your device does not have enough storage space.
  • The APK file is corrupted or incomplete.
  • Your device’s security settings do not allow installation from unknown sources.

How to Fix “App Not Installed” Error

Here are some troubleshooting steps you can try:

Check Compatibility

Make sure that the app you’re trying to install is compatible with your device’s operating system. If it’s not compatible, you won’t be able to install it.

Clean Storage Space

If your device doesn’t have enough storage space, you won’t be able to install any new apps. Try deleting unnecessary files or apps that you no longer use. You can also move some of your files to cloud storage or an external SD card.

Check APK File

The APK file may be corrupted or incomplete, causing the installation failure. Try downloading the APK file again and make sure that the file size matches the one on the app’s official website.

Allow Installation from Unknown Sources

By default, Android devices are set to only allow installation from the Google Play Store. If you downloaded an app from a third-party source, make sure to enable “Unknown Sources” in your device’s security settings.


The “App Not Installed” error can be frustrating, but it’s usually easy to fix. By following these steps, you should be able to install your desired app without any issues. Remember to always download APK files from trusted sources and be cautious of any potential security risks.