Flutter: INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.example.app signatures do not match previously installed version; ignoring

Flutter Error:

Launching lib\main.dart on Nokia 4 2 in debug mode...

lib\main.dart:1

✓ Built build\app\outputs\flutter-apk\app-debug.apk.

Installing build\app\outputs\flutter-apk\app.apk...

Error: ADB exited with exit code 1

Performing Streamed Install

adb: failed to install D:\app\outputs\flutter-apk\app.apk: Failure [INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.example.app signatures do not match previously installed version; ignoring!]

Error launching application on Nokia 4 2.

Solution 1:

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 -> yourApp -> Options (the three dots on top right) -> Uninstall for all users

Solution 2:  run follwoing command that will solve   your problem

• adb uninstall "yourApp"
• example: adb uninstall "com.example.myapp"