Why Does It Say App Not Installed Apk

Why Does It Say App Not Installed APK

The great thing about smartphones is their applications. APK is one step ahead since you get more from these applications. But when you see the message, ‘App not installed’ one wonders, ‘Why Does It Say App Not Installed APK?’

So, to resolve this issue, you should know some quick fixes that will save you time and make this pop–up go away for good.

Causes for the Why Does It Say App Not Installed APK Error and Some Effortless Fixes

Here is one of the most common and possible reasons why it says app not installed APK and their fixes:

The Application Maybe Corrupted

This is the most frequent cause of the App not installed APK error. It occurs when the installed APK file is inherently corrupt. This happens because some data packets were lacking when you downloaded the application (due to bad internet access, for example), or the APK file on the website itself was corrupted.

Also: Read this blog on how to install Apk on Android

Steps to Fix This Error:

  1. Primarily, to avoid such issues, make sure you install the app from a safe and reliable source. Don’t go any further into the search engine results because you might come across a malicious application that will damage your device.
  2. Installing an application from an SD card or from within a directory may create issues throughout installation (especially in earlier versions of Android). So, all you have to do is copy the APK file you installed to the root directory of your device (within internal storage and not inside any folder). Then try again to install the app.
  3. If the preceding step did not resolve your issue, the issue is with the APK file itself. Download and run the app from a different source (APKMirror and APKPure are two of the best).

Insufficient Storage Resulting In Why Does It Say App Not Installed APK Error

Another common cause of the App not installed Apk error is the lack of free storage on your device’s internal storage.

The majority of users believe that the size of the Apk file represents the actual size of the app. However, this isn’t the case. The Apk file is actually a packaged version of the app itself.

The package installer stretches the APK file and copies the additional files to your device when you download the app.

Steps to Fix This Error:

  1. The solution is simple: free up some memory on your device.
  2. To accomplish this, uninstall any apps that you do not use frequently. Navigate to Settings > Apps & Notifications > Apps> Click on the application you want to uninstall>Click Uninstall.
  3. Transfer large files from the internal storage to an SD card or other storage media.
  4. Clear the app cache from your device’s Phone Manager as well. Install a Phone Manager from the Play Store if your device does not come with one.
  5. Install the application again once you have enough storage space on your device.

Hopefully, you will resolve this error, why does it say App not installed APK by following these steps.

Unsuitable Version of the Application

Once you download an application from the Google Play Store, the app is installed in the most stable version for your device. However, if you download an app from an unofficial source, you may end up with a version that your device does not support or the infamous error why does it say App not installed APK.

Here are some ways to fix why does it say App not installed Apk.

Steps to Fix This Error:

  1. No major tweaking is needed to solve this problem. Simply download an earlier version of the application and attempt to install it.
  2. As you’ve seen, the Facebook application comes in a variety of versions. You can install an older version of the application on your device by downloading it.

Unsigned Application

Unsigned apps are those that aren’t available on the Play Store. Every device, by default, prevents the installation of unsigned applications downloaded from third-party sources for security reasons. Even if unsigned apps are blocked by default, you can install them on your device. Here are some ways to fix why does it say App not installed APK.

Steps to Fix This Error:

  1. Go to Settings>Lock Screen and Security to download third-party apps on your device
  2. Enable Unknown Sources
  3. You can now install the application.

So, did you manage to resolve the issue? If not, don’t worry! It’s not the end of the world. These were simple fixes. Let’s discuss some real technical fixes now.

Miscellaneous Fixes for the Why Does It Say App Not Installed APK Error

Let’s dig a little deeper into resolving this maddening error “why does it say App not installed APK” in this section. Here are the best technical solutions to this problem.

Disable Google Play Protect

Google Play Protect is a Google Play Store feature that assists keep your device protected and safe.

Before installing applications from the Play Store, it performs a security check. The Play Protect function also scans your device for potentially problematic apps downloaded from other sites and attempts to block third-party installs on your system. This feature may also be the cause of the “why does it say App not installed APK” error.

Steps to Disable Google Play Protect:

  1. Launch the Google’s Play Store on your device
  2. Navigate to Menu (the hamburger symbol on the left)> Play Protect> Settings
  3. Disable Scan Apps with Play Protect
  4. Reinstall the application you downloaded

Reset App Preferences

When your apps aren’t working properly, Reset App Preferences is a tried-and-true solution. Clearing default apps, resetting app permissions, resetting background data restrictions, and re-enabling disabled apps are all part of the process.

Remember that this will have no effect on your photos, files, or other data.

Steps to Reset App Preferences:

  • Go to the device Settings
  • Select Apps from the Apps & Notifications menu
  • At the bottom, tap the three dots labeled More to reset your app preferences
  • A warning alert will appear in the form of a pop-up
  • Select Reset

Clear the Package Installer Data

Often the package installer is the source of the problem. It is possible that the app will not be installed due to an unspecified error. As a result, you must clear the files of the package installer itself.

Steps to Clear Data:

  • Go to the device settings
  • Navigate to Apps & Notifications>Apps
  • Ensure that Show System Processes are enabled
  • Search for a suitable Package Installer
  • Launch it and navigate to Storage>Clear Data
  • Re-install application


We hope this blog answered your query of why it say App not installed Apk. Having done our part, it’s time for you to choose the solution that works for you. However, if none of the above methods worked for you, the error is most likely unavoidable.

Perhaps your device is incompatible with the app, or your device is running an extremely old version of Android.

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