Cannot install signed apk to device manually got error App not installed

Question

I d like to publicate my app to GooglePlay but first i would like to do a last testing with the signed apk to ensure that all of the used API keys are working correctly with the release version  GMaps  Facebook  etc   So i just made a signed version of my app with our release key and when i try to install the app to the device i got an error     I have tried to copy the apk to the device and install it with an apk installer app   Strange thing is when i do the same process with debug signing key  all is well  I can install and run the app   Here are the steps of the procedure   I select the release key  type password     I do select release build type instead of debugging    Just in case i also defined in the gradle file the signing keys but I must admit i dont know is it necessary     I tried like 7 seven times now so i assume this problem is not just a  mistyped password  also I can make this work with the standard debug android signing key   Please help if you can

User · Answer

Above shubham soni answer works for me actually it happens to android version   5 0 In above you able to install just use this while creating your apk

User · Answer

In my case I was trying to test installing a signed APK and the current installed version on my device was unsigned  building a debug version directly from Android studio

User · Answer

File   Project Structure   Build Variants   Select release   Make sure  Signing Config  is not empty   if it is select from the drop window the  signingConfigs release  I did this with Android Studio 3 1 4 and it allowed me to create a release apk after following all the steps above of creating the release apk and release key and adding the info to the app gradle   Cheers

User · Answer

It is obvious but still it was hard to figure out for me  Please check if your mobile device has enough space to install the apk  and it is not full

User · Answer

In Android Studio 3 0 and Above  As described here  Note  The Run  button builds an APK with testOnly  true   which means the APK can only be installed via adb  which Android Studio uses   If you want a debuggable APK that people can install without adb  select your debug variant and click Build Bundle s    APK s    Build APK s    Add android testOnly  false  inside Application tag in AndroidManifest xml  Reference  https   commonsware com blog 2017 10 31 android-studio-3p0-flag-test-only html

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I am using Android 10 in MiA2  The mistake I was making is that I tried to install the app via ES Explorer  I tried Settings - gt  Apps  amp  Notifications - gt  Advanced - gt  Special App Access - gt  Install Unknown Apps - gt  ES File Manage - gt  Allow from this source  Even then the app won t install  Then I tired to install the app using the default File Manager and it installed easily

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Kindly uninstall the debug app in the device or just increase the version code to overcome this issues

User · Answer

That may because you run APK file from external SD card storage  Just copy APK file into internal storagem problem will be solved

User · Answer

Go To Build Gradle module app     use this -   minifyEnabled false

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Android Studio 4 1 1 If you want to create the debug apk  and just before creating the apk you tried running on your phone simulator  doing create signed apk right away will cause the APP NOT INSTALLED  YOU SHOULD CLEAN THE PROJECT before creating signed bundle apk

User · Answer

I was face same issue in my android application  I did just update some library and then create sign APK  Now its work

User · Answer

This can happen due to your choice of the signature version  On some phones  installation errors occur if the signature version was selected as V2  So if that happens  try selecting V1  it will surely work

User · Answer

selecting Signature Version v1 and v2 both solved the problem for me    try it

User · Answer

The same thing happened to me  as long as I generated my apk from Build  Build APK  I could install and un-install the apk as many times as they were without any problem  but instead if I generated the Build  Generate Signed APK  when I passed the apk to the phone and try to install it  it only allowed me one occasion  the same one that came out the following message      until then everything was fine if I selected  INSTALL IN ANY WAY   but what happened if I uninstalled the app and wanted to reinstall it  a possible scenario   the following happened     so I solved the problem by disabling play protect  which I achieved  within Google Play   Menu  Play Protect  Search for security threats  disable

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For Current Updated Android Studio 2 3 users this answer is for you as hardly people use eclipse nowadays for Android development as Android studio has huge advancements   So  Follow this way to create your Signed apk file    Build   Generate Signed apk  Create Keystore path  Put Password  alias  key password  Build type select accordingly eg to release in playstore use release   Signature Version select both V1 and V2 checkboxes  Finsih  Go to from explorer where you selected for the apk to store and you will see your  apk file name as app-release apk use it

User · Answer

You don t have to uninstall the Google Play version if App Signing by Google Play is enabled for your app  follow the steps   1  Make a signed version of your app with your release key  2  Go to Google Play Developer console  3  Create a closed track release  alpha or beta release  with the new signed version of your app  4  You can now download the apk signed by App Signing by Google Play  choose derived APK     Install the downloaded derived APK      The reason is App Signing by Google Play signs release apps with different keys  if you have an app installed from Play Store  and you want to test the new release version app  generated from Android Studio  in your phone   App not installed  happens since the old version and the new version were signed by two different keys  one with App Signing by Google Play and one with your key

User · Answer

It s quite old question  but my solution was to change versionCode  increase  in build gradle

User · Answer

Select both Signature Version v1 and v2 will resolve the issue    v1 scheme     A JAR file can be signed by using the command line jarsigner tool or   directly through the java security API  Every file entry  including   non-signature related files in the META-INF directory  will be signed   if the JAR file is signed by the jarsigner tool  For every file entry   signed in the signed JAR file  an individual manifest entry is created   for it as long as it does not already exist in the manifest   V2 scheme     v1 signatures do not protect some parts of the APK  such as ZIP   metadata  The APK verifier needs to process lots of untrusted  not yet   verified  data structures and then discard data not covered by the   signatures  This offers a sizeable attack surface  Moreover  the APK   verifier must uncompress all compressed entries  consuming more time   and memory  To address these issues  Android 7 0 introduced APK   Signature Scheme v2   By default  Android Studio 2 2 and the Android Plugin for Gradle 2 2 sign your app using both APK Signature Scheme v2 and the traditional signing scheme  which uses JAR signing   It is recommended to use APK Signature Scheme v2 but is not mandatory  please see the details

User · Answer

You may be using the android 5 0 or above device    Just go to the Settings --  Apps --  Click on your App  ---  In App info page at the action bar menu there will be an option called   Uninstall for All users   click that  Your app will be completely uninstalled and now you can try installing the new version with no issue  Hope this will help you  Check my solution from below link     Link 1  Hope it will help you

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Here I resolved this issue  The reason behind this issue is  there is already an application with the same package name in the phone  but you cannot find it in phone menu U already made the un-installation but actually its still in your phone     To see the application go to phones SETTINGS -  APPS  There you can see the application  but inside that the UNINSTALL button may be disabled  click on the menu overflow button to see Uninstall for all users   After performed uninstalled for all users I have successfully installed my signed apk  You can also use adb to uninstall the app from phone   adb uninstall package name   In addition to this  if your mobile supports multiple users then check if respective app is not installed for other users  If it is installed for others then first uninstall previous app and try again

User · Answer

if Your Android Studio Version Greater than 3 0  Looks like we can not directly use the apk after running on the device from the build -- output- apk folder   After upgrading to android studio 3 0 you need to go to Build -  Build Apk s  then copy the apk from build -  output -  apk -  debug

User · Answer

App not installed  shows when an app with same package already installed in same device  just delete your first application which you were using for testing purpose before making it to signed apk  This will work  cheers

User · Answer

minifyEnabled false  is the only that worked for me after 3 days of research on all forum

User · Answer

Removing android testOnly  true  attribute from the AndroidManifest xml worked  link

User · Answer

I faced the same issue today  I remembered that I signed my apk with the  quot new quot  Google Play signing     Make sure if you signed your application with Google Play signing  If you did   Upload your apk to Google Console  like you usually would when updating your application        After it has successfully uploaded  open the Artifact library in the menu  You will see the apk you have just uploaded  Press the download button and select Download derived APK   You will now be able to install the apk  You can delete the draft after have downloaded the apk without having to update your application to the Google Play Store

[android] Cannot install signed apk to device manually, got error "App not installed"

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