Home Mobile Problems Android Problems Best 6 Ways To Fix App Not Installed Error in Android

Best 6 Ways To Fix App Not Installed Error in Android

I still remember the days when I had a Nokia 3310. Those were the phones which we used only for calling, texting, Alarm or playing Snake Xenzia for fun. But with the passage of time, the technology has evolved so much. And with the evolution of technology, many cool features are being added day by day on the phones. And the name from a cell phone changed to a smartphone. As it can contain data which includes games, Apps and other files. The modern Android, windows, and IOS devices have powerful features. These are handy for a different situation. But with advanced features, there are also many problems. Today I will explain App Not Installed problem below.

App Not Installed Error

Android is one of the most leading Os platforms around the world. 88% Billion Android Mobile users around the World According Statista. Nowadays every android users use most applications for daily usages. According to Statista more than 2.6 Million application (December 2018) on Play Store. Most of the Android application enhance android user experience. So for using the experience, you need to install that application on your phone. During that installation time, most of the android users facing App Not Installed error. This error does not allow to install that application on their phone.

The App Not Installed is one hell of a problem. Which the users of the Android version KitKat, Lolipop and Marshmellow face this type of problem. I faced the problem when I was using the LG G2 having the android version KitKat installed on it. I downloaded a game named Afterpulse. And when I was about to install the app there was an error on my screen saying that the App Not Installed. It was so annoying, trust me, I couldn’t explain it in words. I started finding solutions because I wanted to play that game.

At first, I thought that I haven’t downloaded the app. I deleted that file of 740 MB and started a fresh file on download. When the download finished, I tried again, but the result was not different than the first one. I started researching on the internet for this problem. And also did some of my own research and I learned different things during that period of time.

At first, I thought that I haven’t downloaded the app. I deleted that file of 740 MB and started a fresh file on download. When the download finished, I tried again, but the result was not different than the first one. I started researching on the internet for this problem. And also did some of my own research and I learned different things during that period of time.

Note: Please keep on reading if you are facing the same issue. Because in this article I have explained everything in detail. I am telling it from my personal experience and research. And some of these ideas are from the internet so make sure you go through the whole article. I hope you will be able to fix  “APP NOT INSTALLED” error and get your desired apps on your phone.

Understanding App Not Installed issue

Before we try to solve the problem we must first learn what are the possible causes due to which we face this error. If we don’t know what is causing the problem, we won’t be able to end the problem from the root. Based on my research the following are the main causes of the error ‘App Not Installed‘ message.

Corrupted files:-

As I have mentioned earlier. The corrupted files that you download will always be the main problem. they will cause the error to occur. So make sure that you download the files from an authentic and trusted source. Always check the comments section and listen to what people are saying about the file. If the comments are in favour of the file don’t hesitate to download it. Sometimes virus attack on the file also corrupts it which becomes a headache often. To check the corrupted file, check it’s properties. It will have a small size as compared to the original size. It means that some of the data is missing from that file

Not enough storage:-

 Sometimes having low storage on phone will also be a cause of app not installed error. As an android package consists of different kind of files. Now if we have a low storage space the installer will not be able to install some of the files from the package. And the app may need every bit of these files to work. Due to which it fails to install and you see an error saying App Not Installed.

Insufficient system permissions:-

 The insufficient system permissions will also more be likely to stir the problem. And a pop-up with the error will appear on the screen. They may also cause unknown code error during the installation of a file.

Also Read:- 7 Best Ways to Solve there was a problem parsing the package Problem

Unsigned App:-

An app will always need to get signed by a Keystore. A keystore is a binary file that contains a set of private keys for apps. Due to these, the apps work on devices. Files that are not downloaded from the official google play store. they will more likely to be missing the signature from keystore. And this missing signature causes the problem during the installation of that file.

Incompatible version:-

 As I said when I downloaded the After Pulse game it was actually made for the Android OS 5 (lollipop).  And I was trying to install it on KitKat version. thus I was getting nothing but the error screen. I came to know that an incompatible file version is causing this error. And there is no way to install an incompatible version of the file. unless you are applying some serious tweaks on your phone.

There are more factors which affect the installation of an app. I only mentioned 5 of them because I don’t want to bore you out. And now we are heading towards the solution of the problem App Not Installed.

A Scientific Approach to The Solution of App Not Installed Error

The following Solutions may help you end the problem. And enable you to install your desired app on your android smartphone. If they don’t work for you (in case) do not forget to mention it in the comments below. We will help you with a possible solution. But make sure you follow the instruction to the letter first and execute the steps shown in this article.

Method 1- Eliminating the problem by changing the app codes:-

  • First of all, go to the Play Store/Google Play on your device.
  • Search for an app called “APK Editor Pro“.
  • Download the application on your device. (Note:- This is a Paid application) You can find this application by doing a simple Google Search.
  • Open the app and select “APK from the app” or “Select an APK File” option (depending on your situation which application you want to edit).
 APK Editor Pro
APK Editor Pro
  • Navigate through the available apps on your phone and locate your desired app. Click in your selected APP and press on “Common Edit“.
APK Editor pro Common Edit
APK Editor pro Common Edit
  • Change the install location of the app to “Internal Only” according to your need. Also, keep this in mind that you can also change the app version the code too using the APK Editor Pro. So feel free to play with the app. The more you try it the more you will learn about things.
apk editor version code change
Apk editor version code change
  • After modifications make sure you apply the changes by clicking on save button. And then install the modified version of the app.
Apk editor save changes
Apk editor save changes

Before installation of the modified version of the app.  Always make that sure you have deleted other before loaded things related to the app.

Method 2- Resetting the app preferences:-

  • Go to settings.
  • Then go to the apps or “Apps & notifications” (on some phones). Switch to the all apps tab.
Apps & notification on settings
Apps & notification on settings
  • On the All Apps tab, you will see a “three-dot” on the top right corner, click on it.
apps on android
Apps on android
  • After some features will pop up. In there you need to click on the “Reset App Preferences“.
Reset App Preferences android
Reset App Preferences android
  • Immediately a Diolage box will open. In there you need to click on the “RESET APPS“.
Reset Apps
Reset Apps
  • Boom!! all is done. Try to install the App and getting error whether or not.

Method 3- Disabling Google Play protect

Google play store play also play major role on App not Installed error. It’s automatically detected those apps which are not available on play store and don’t allow to install those apps. If you trying to install an application which not available on play store, so may get App not Installed error. You can install those applications by disabling Google Play Protect.

  • First, open Play Store on your phone.
  • Click on the “Hamburger” menu icon.
Hamburger menu icon on play store
Hamburger menu icon on play store
  • Find “Play Protect” and open it up.
Play Protect
Play Protect
  • On the “Play Protect” click on the “Settings icon” on the top right corner.
Play Protect click on the Settings icon
Play Protect click on the Settings icon
  • Disable “Scan device for security threats” by tapping on the toggle button. (Note:- After installing turn it back ON)
Disable Scan device for security threats
Disable Scan device for security threats
  • Now you’re good to go install the application.

Method 4- Avoid installation from the sd-cards (Old Phones):-

The sd card contains a large number of contaminated files. Which are actually harmful to your device sometimes. Try to avoid installing the apps from the sd cards. As the phone installers will not be able to parse the package completely. Thus downloading the file on internal storage. And then installing it from there is always a better choice.

Method 5- Try ‘Signing’ the ‘App’ by the following method:-

  • Download an app called “apk-signer” from the android play store.
apk-signer app download
apk-signer app download
  • Open the app and go to the dashboard.
  • In there you will see three sections “SIGNING” “VERIFYING” & “KEYSTORES”. But you need to click on the “SIGNING” section.
apk-signer SIGNING section
apk-signer SIGNING section
  • On the bottom, you will see a “pencil like” an icon and click on them. After your file manager will open, select your application which you have got the app not installed error.
apk-signer application selection
apk-signer application selection
  • On the bottom, you will see a “Save” button, click on it and your application will automatically “Signed” within a few seconds.
apk-signer apk signed
apk-signer apk signed
Signed Apk Process
  • Click on “Signed” application to install on your phone.
  • If that didn’t help make sure you try the steps given below.

Method 6- Clearing the data:-

Another way to get rid of this annoying error is by clearing the data and cache of the package installer. Please follow the steps below. (Note:- This option available on some old phones)

  • Go to settings.
  • Go to apps.
  • Then go to the package installer.
  • Clear data and cache.
  • Run the app to check for the problem.

Method 7- Unknown source installation:-

Companies disable the unknown source installation by default. Due to these settings, one has to face the problem. It is because the system will not let the apps which are not downloaded from the play store to install. As it considers them unhealthy for the device. Make sure you turn your unknown source installation on. Before trying to install an app downloaded from any third party website. There are several options to enable Unknown source installation.

Enabling On Android Oreo or Higher

  1. You can enable this option while installing any third-party apps. For this, I am downloading an application on Chrome.
Downloading application on Chrome
Downloading application on Chrome

2. After completing download click on that and you will see and PopUp notification Regarding “Unknown app installation“, so you simply head over to the “settings

Unknown app installation on chrome
Unknown app installation on chrome

3. Just enable “Allow from this source” by tapping on the toggle button.

enable Allow from this source on chrome
enable Allow from this source on chrome

Enabling On Android Nougat or Lower

  1. Enable unknown source installation on Android Nougat or Lower is too easy. First head over to your phone settings and open “Security” or other security option depends on your phone.
security or privacy tab on android
Android Setting

2. Under security, you need to find “Unknown sources” and enable it by tapping on the toggle button. That’s it.

enable Unknown sources
enable Unknown sources

3. Now you are good to install third-party applications without getting any error if the unknown source making any problem.

install third-party applications
install third-party applications


If you sill was not able to solve the “App Not Installed” problem, this final dedication will help you. This problem can not solve because of some of the most sensitive case, one is that your application is corrupted another is your phone OS problem. My final answer is that to rid out of this app not installed error, first throw away that application which you want to install. Find the updated version of that application or I recommended you download that application form this application. But still not done “Reset” and delete all data from your phone, and you are good to go install that App and no more get App Not Installed error.

General FAQ’s

What is App Not Installed?

App Not Installed is a common problem which is accour while installing Applications.

Mainak Ghosh
Tech Lover!!!

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    • It’s happened due to your phone system configuration. I think your phone RAM already occupied with other apps. Try on other phones with much more RAM.

  1. All these methods didn’t work for me.
    Few apps like Amazon(which I shared to this device from other device),Snaptube got installed while Dream11, Mx Player(received from other device) aren’t getting installed.
    Please reply me for fixing this.
    If you can share your mail,I want to connect you by mail as I think it might be a problem with OS,I need to share other problems which I’m facing in detail.


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