[android] Package signatures do not match the previously installed version

This my project: https://github.com/kenpeter/my_hak_news, which is a direct copy of https://github.com/grigio/HAgnostic-News.

Git clone https://github.com/kenpeter/my_hak_news, then run react-native run-android

Got this error:

* What went wrong:
Execution failed for task ':app:installDebug'.
> com.android.builder.testing.api.DeviceException: com.android.ddmlib.InstallException: Failed to finalize session : INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.hagnosticnews signatures do not match the previously installed version; ignoring!

Relevant issue: https://github.com/grigio/HAgnostic-News/issues/1, I follow various ways, but not able to resolve this issue.

This occurs due to the availability of the previous version of the Application, that is not installed on the device but its data is present in the device memory. So it fails to upgrade this uninstalled application data on the device

Try this :

Go to Device Settings ==> Apps(All Apps) ==> search your App OR search for 'client' ==> In App info screen , press the triple dots option on top right corner ==> select 'Uninstall for All Users' ==> a promt appears select 'OK'

It works for me every time this error occurs

I met this problem on my project too.

This helped me, so hopefuly will help someone else:

adb uninstall "com.domain.yourapp"

Solution is from here.

If the version of the app that you have installed was not built with the same keystore/signing certificate it will have a different signature. By default each build machine will have a different debug certificate unless you specify how it should be signed according to the google documentation, which can be used to ensure that your app will be build with the same debug key regardless of which computer you build the application on.

In order to proceed with the installation you must uninstall the existing version and then try again.

In my case the issue was I had installed an app with the package name let's say com.example.package using android studio on my device. I created another app with the same package name and was trying to install it on my device. That is what was causing the problem. So just check on your device whether another app with the same package name already exists or not.

Today, I faced the same problem on my Samsung device. In my particular case, the app was NOT showing on the phone but it was INSTALLED, so I could not uninstall/remove it. Thus I had to uninstall the app using the terminal: $ adb uninstall "com.domain.yourapp" My project tree looks like this (partial view):

+-- com
    +-- gluonapplication
        +-- DrawerManager.java
        +-- StartApplication.java
        +-- views
            +-- PrimaryPresenter.java
            +-- PrimaryView.java
            +-- SecondaryPresenter.java
            +-- SecondaryView.java

So for me, the command was: $ adb uninstall com.gluonapplication Once done, I installed the app via terminal:

$ cd /path/to/apk/
$ adb install -t myAwesomeApp.apk  # -t means test install

That is what worked for me. I hope this answer is helpfull.

This happens when you have installed app with diffrent versions on your mobile/emulator phone.

Simply uninstall existing app will solve the problem

In my case, uninstall installed application in connected device resolved my problem

This error happened to me when a previous build on my simulator / phone was being uploaded with different credentials. What I had to do was run:

adb uninstall com.exampleappname

Once I did that I was able to rerun the build and generate an APK.

I had this issue on a Samsung device, Uninstalling the app gave the same message. The problem was that the app was also installed in the phone's "Secure Folder" area. Worth checking if this is your scenario.

com.android.builder.testing.api.DeviceException: com.android.ddmlib.InstallException: Failed to finalize session : INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package [MY REACT NATIVE APP NAME HERE] signatures do not match the previously installed version; ignoring!

I got this error when trying to install my React Native Android app on a connected device using this command:

react-native run-android --variant=release

I also had an emulator running on my computer.

Once I quit the emulator, running this command succeeded.

Go to android studio -> AVD manager -> Select your AVD and wipe user data

No need to re-install the entire AVD.

You need to uninstall it because you are using a different signature than the original. If it is not working it might be because it is still installed for another user on the device. To completely uninstall, go to Settings -> Apps -> (specific app)-> Options (the three dots on top right) -> Uninstall for all users.

I am also got this issue that time already installed ionic app(same package name) remove from my phone after that working perfectly.

Only 1 emulator or device may be open at a time. Make sure you don't have multiple emulators running.

This happens mostly when the phone has the app's version from Google Play Store installed. You can either built the code with the same keystore/certificate you used for your production version, or just uninstall it from the phone and build it with your debug keystore/certificate

you need uninstall completely for LG devices by using cmd adb uninstall packageName

I got the same error. I uninstalled the app on my virtual device and rerun the command: 'react-native run-android'.

If you are trying to install it in an Emulator but have another phone connected to the computer via USB, detach the USB cable or disable USB debugging in the physical device. (Wasted 30min on it myself.)

This happened to me in a React Native project when I was renaming an app's bundle ID, and it clashed with another bundle ID that I'd already used before. I fixed it by performing a re-install:

1. Find the app on the simulator's home screen, then long-press on its app icon, and press App info, then choose "UNINSTALL".

2. Execute react-native run android.

I have the same problem, it was running well in AVD, but in my phone was not ok. I uninstalled the app on my phone then it's working fine.