Connecting my device to my PC and checking for connected device show the same device twice.

C:\Program Files (x86)\Minimal ADB and Fastboot>adb devices
List of devices attached
21e8ed64090d7ece        offline
21e8ed64090d7ece        device

Original screenshot of ADB indicating device as both connected and offline

Running any command results in ADB spitting out an error:

error: more than one device/emulator

What do I do?

Device: Samsung S9 (SM-G960F) (starlte) (Exynos)
Android version: 12 (Arrow OS)
Build number: SQ1D.220205.004

  • 2
    adb kill-server
    – alecxs
    Mar 20, 2022 at 8:29

1 Answer 1


One of these solutions must work

  1. adb kill-server then trying adb commands again
  2. adb kill-server then turn ON and OFF usb debugging under dev options and trying adb commands again
  3. Possible solution 1 and 2 but do a reboot too
  4. Trying a different USB port in your computer
  5. Trying a different data cable

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