How to fix App not installed error in Android

Question

I develop android application and when create APk from this application (with Generate Signed APK) and when install this apk in other devices not install and show me this error on phone : App not installed

how can i fix it?

Answer 1

This is usually caused when you have a debug apk that is signed with a different certificate and you are trying to install a release version with a different certificate. If you have a debug apk on the device try uninstalling it and try again.

Answer 2

For me, **disabling Google Play Protect** options from play store app worked , and i was able to get rid of the App not Installed error. Check the play protect option available in Google Play Store Navigation menu.

Answer 3

android:extractNativeLibs="true"

in AndroidManifest.xml file fixed the problem for me.

    <application
        // ...
        android:extractNativeLibs="true"

Notes: I got this error when building with App Center and all the signing was handled by app center.

For easier debugging just drag and drop the apk file in the android emulator. Your will get a more detailed message why the app is not installed.

Previously I tried all the Play protect things and checked the build.gradle file contains no release info in signingConfigs and that there's no signingConfig in buildTypes.release just as described in the other answers from this page.

Answer 4

delete build folder from your project and then build project again.. working for me

Answer 5

File an appeal with Google Play Protect

Proper way to create URL to download your APK file

You need to make a direct link to download application, not to a drive. First, I uploaded my application on google drive and shared the link. after submitting the apeal I instantly received a mail

Hi

You recently submitted an appeal for an app with Google Play Protect.

The link you have provided does not lead to an APK file or the file is corrupted. Please submit a new appeal and check that you are providing the link to the correct APK file.

Thank You, Google Play Protect Team

• Upload your APK file to dropbox (didn't try any other platform)
• Get sharable link (link setting should be Anyone with this link can view the file.)
• Your link will something like this https://www.dropbox.com/s/xxxxxxxxxx/ApplicationName.apk?dl=0
• Change the ending apk?dl=0 to apk?dl=1 (Changing it to 0 will make the link to direct download the APK, try it yourself and see.)
• Your new link should be like this https://www.dropbox.com/s/xxxxxxxxxx/ApplicationName.apk?dl=1
• Use any URL Shortner
• Your acceptable link is ready

If you don't know what is your Application package name, then go to your AndroidManifest.xml There will be line package="com.example.MyApplication"

After submitting it if everything goes correct you may receive a mail instantly from Google

Hi

You recently submitted an appeal for an app with Google Play Protect.

We have successfully received the appeal for your app. Our team will review the app and any information you have provided.

Thank You, Google Play Protect Team

Don't expect any other reply from Google Play Protect Team, In my case, I didn't receive any mail, But the issue was solved, After a 2-3 business day the issue was fixed while installing the application I no longer received the Blocked by Play Protect warning. and App not installed

Answer 6

I know this is an old thread, but I have had the same "App not installed" issue that I have been struggling with, this is how I solved it.

Connect your device to your computer, and just before you start installing the app, run this command from commandline:

adb logcat > logcat.txt

And stop it right after you get the "App not installed" message. (Ctrl + c).

The reason for starting and stopping it just around the install process is because logcat is very "chatty".

Have a look in the generated text-file to find the error. It can be like finding the needle in a haystack, but I found my error just before "packageinstaller.InstallFailed" log-line.

The error looked like this:

10-10 21:36:43.402  1549  1940 E NativeLibraryHelper: Library 'libjsc.so' is not page-aligned - will not be able to open it directly from apk.
10-10 21:36:43.402  1549  1940 W NativeHelper: Failure copying native libraries [errorCode=-2]
10-10 21:36:43.403  1549  1940 E PackageInstallerSession: Commit of session 1728055717 failed: Failed to extract native libraries, res=-2

Answer 7

I fix this issue by correct the targetSdkVersion from build.gradle file.

Answer 8

My solution for this issue, I monitored the Logcat and could see the error because my app was not installed.

I received message DOWNGRADE VERSION, added a VersionCode in BuildGradle and for me it's working.