: Having multiple versions of ADB installed (e.g., one from a system package and one from an Android SDK) can lead to "server version mismatch" errors. Resolving this typically requires pointing your PATH to the specific platform-tools directory .
ADB 1.0.41 is picky about drivers (especially on Windows) or the USB mode. Fix: adb 1.0.41
: This occurs when the RSA fingerprint hasn't been accepted on the phone screen. Disconnect the cable, run adb kill-server , then adb start-server , and reconnect the device. : Having multiple versions of ADB installed (e