ADB Android Device Unauthorized

Question

Since I reinstalled Eclipse (simply deleted and downloaded it again) I can\'t debug my applications on Samsung Galaxy i9001 (with CyanogenMod - Android 4.4.2). It worked fin

Answer 1

Try forcing ADB to create new keys.

• On Linux:

  $ mv ~/.android/adbkey ~/.android/adbkey.old
  $ mv ~/.android/adbkey.pub ~/.android/adbkey.pub.old
  $ adb kill-server
  $ adb start-server
  

• On Windows 10 (thank you, Pau Coma Ramirez, Naveen and d4c0d312!):

  • Go to %HOMEPATH%\Android\.android\
  • Look for files called adbkey or adbkey.pub.
  • Delete these files. Or, if you want to be on the safe side, move them to another directory.
  • Repeat the above steps in %USERPROFILE%\.android\
  • Try again

After this I didn't even need to unplug my phone: the authorization prompt was already there. Good luck!