If you have an Android device and you see that your app is not installed, there are a few things you can do to try to fix it. Here are three methods:

  1. Go to the app’s settings and select the “installed apps” tab. If the app is listed as an installed app but it is not working, make sure that it is uninstalled and then reinstall the app.
  2. Check for updates for the app and install them if they are available. If there are no updates available, or if they are too old, then you can try to find a new version of the app on Google Play or another store.
  3. Try resetting your device or restoring your original factory settings if there is something wrong with how your phone works when an app isn’t installed properly.

Why Do You See “App not installed” Error?

  1. The file is not from the correct source.
  2. The file is not from the correct version of the Android system.
  3. The file is not from the correct device.
  4. The file is not from the correct manufacturer.

Corrupted Files

One of the most common reasons why apps don’t install is because of corrupted files. So, to avoid this problem, you should always download APK files from a trusted source and look at the comments section to see if anyone has had any problems with it. If there are no negative comments, then you can download it. ..

When you find a corrupted file, always know that it is not the original file. The corrupted file will have a smaller size, and some files will be missing.

Storage Problem

This error can occur when the APK needs all the files in the package to be installed on your storage, and a lack of storage will restrict some of the files from being installed. This can cause the error.

System Permissions Missing

If you have not given the necessary system permissions that are required to install an APK file from some unknown sources, you may not be able to install the file.

Unsigned App

All of the apps must be signed by a Keystore in order to work on devices. If an app is unsigned, it won’t work.

Incompatible Versions

If the app that you want to install is not compatible with your device, it will not be installed on your device and you will get this error message.

Fix APK Not Installed Problem

By Resetting App Preferences

Step 2: Scroll down and tap on the three lines in the top right corner of the screen. Step 3: Tap on ‘Notifications’ and then select ‘All notifications’. Step 4: Scroll down and tap on the three lines in the bottom right corner of the screen. Step 5: Tap on ‘Notifications’ and then select ‘App notifications’.

Step 3: Scroll to the bottom of the page and tap on ‘Remove’. Step 4: Select the app you want to remove and tap on ‘Remove’. ..

Step 4: On the main screen, tap on ‘Settings’. Step 5: Scroll down and tap on ‘Privacy’. Step 6: Tap on the three dots next to ‘Location Services’ and then tap on ‘Reset app preferences.

Step 4: When the dialog box open, tap on ‘RESET APPS’.

That’s it and you are all set. Now try installing the APK file again.

By Disabling Google Play Protect

Step 2: Tap on the “Apps” tab. Step 3: Scroll down to the bottom and tap on the “Google Play Services” icon. Step 4: Tap on the “Add App” button. Step 5: Enter your name and contact information, and tap on the “Create App” button. Step 6: Enter a description for your app, and tap on the “Create App Description” button. Step 7: Click on the “Finish” button to submit your app to Google Play Store.

Step 3: If you are using a phone that is not supported by the Protect feature, then you will need to use a different method to protect your device.

The settings icon on the top-right corner of your screen will allow you to change a few of the important settings for your device. The most important setting is “Screen resolution.” You can change the resolution of your device to any number you like, but we recommend at least 1280x720. If you want to use a higher resolution, make sure to set it as the default. You can also choose “Display mode” if you want to have a different display type on your device, like an LCD or LED screen. Finally, “Privacy” will allow you to decide how much information other people can see about your device.

Disable “Scan apps with Play Protect” on your device.

That’s it and you are all set now try installing the APK file, and after successful installation, turn Play Protect on again.

By Signing an APK File Yourself

To sign an APK file, you first need to create a Keystore. A Keystore is a secure place where you store your cryptographic keys. To create a Keystore, open the Keystore Manager and click on the New Keystore button. In the Name field, type a unique name for your Keystore. In the Type field, select either RSA or ECDSA. In the Password field, enter a strong password that you will remember when creating your Keystore. Click on the OK button to create your new Keystore. Now that you have created yourKeyStore, you can sign an APK file using it. To sign an APK file, open the File Manager and click on the Sign button. In the Name field, type the filename of the APK file that you want to sign and in the Type field, select either RSA or ECDSA. In the Password field, enter a strong password that you will remember when signing an APK file. Click on the OK button to sign an APK file using yourKeyStore.

Step 2: Open the app and sign in with your Google account. Step 3: Click on the “Sign In” button. Step 4: Enter your email address and password. Step 5: Click on the “Create a new key” button. Step 6: Enter a name for your new key and click on the “Create” button. Step 7: Your new key will be created and you will be able to use it to sign in to the app.

Step 2: Open the app, click on ‘SIGNATURE’ tab. To sign a document in the app:

  1. Open the app and click on ‘SIGNING’ tab.
  2. Click on the document you want to sign and select ‘SIGN’ from the drop-down menu.
  3. Select your signature style from the drop-down menu and enter your signature text. ..

Step 4: Click on the “file” icon on the bottom-right, and select the file that is causing the problem.

Step 4: Now you will see the ‘SAVE’ button, click on it and the signed version of the app will be saved on your device.

If you have installed Android Studio, open it and click on the “File” menu item. Then select “Open an APK File.” If you don’t have Android Studio, open a web browser and go to https://developer.android.com/sdk/index.html#downloads. Click on the “Downloads” link and select the “Android SDK Platform-tools” package. After you’ve downloaded the package, unzip it to a location on your computer. ..

You have just completed a difficult task and now you are all set.

Some Other Tips to Fix This Issue

Whenever you will download an APK file, then you click to open it you will see the option to enable installation from unknown sources, all you have to do is allow that. Do not install APK files from an old SD card or some old physical storage. You can also try formatting your SD card if you have any, and then try installing the APK file.

  1. Try reinstalling the app
  2. Use a third-party app installer
  3. Use a custom recovery image