Failure [INSTALL_FAILED_ALREADY_EXISTS] when I tried to update my application

Question

when I tried to update my applcation with new version that has same signature as previous one, shows above error.

What I am missing?

Answer 1

With my Android 5 tablet, every time I attempt to use adb, to install a signed release apk, I get the [INSTALL_FAILED_ALREADY_EXISTS] error.

I have to uninstall the debug package first. But, I cannot uninstall using the device's Application Manager!

If do uninstall the debug version with the Application Manager, then I have to re-run the debug build variant from Android Studio, then uninstall it using adb uninstall com.example.mypackagename

Finally, I can use adb install myApp.apk to install the signed release apk.