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Xamarin.Android error ADB0050

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Example messages

error ADB0050: Package {packageName} already exists on device.

Issue

ADB0050 is likely an error in the Xamarin.Android build chain, since it means there was an absence of the -r flag during the adb install command.

This message indicates that adb (Android Debug Bridge) reported an INSTALL_FAILED_ALREADY_EXISTS error. adb is part of the Android SDK and is used internally by Xamarin.Android to communicate with Android emulators and devices. Learn more about adb from the Android documentation.

Solution

Consider submitting a bug if you are getting this warning under normal circumstances.

Implementation notes

Note that nothing in the open source xamarin-android repository emits ADB0050, as features such as debugging and "fast deployment" are implemented in the proprietary Xamarin.Android additions.