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    Step two was not necessary here, but couldn't find that menu either. Commented Feb 6, 2015 at 14:02
  • 111
    The device didn't ask (or I didn't see it ask) if to agree to reconnect, but after following the above steps, then turn off and turn back on usb-debugging, it worked. Commented Apr 3, 2015 at 20:32
  • 3
    Didn't work for me; Android 6.0 Marshmallow has no option "Revoke USB debugging authorization." Note: after killing ADB, I get "This adbd's $ADB_VENDOR_KEYS is not set; try 'adb kill-server' if that seems wrong"; as well as "error: device unauthorized" etc. Commented Oct 30, 2015 at 22:34
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    If your device doesn't prompt for authorization it might be because the account you're running adb from doesn't have permission to handle keys. If this happens to you, try it elevated permissions (e.g. sudo). Commented Aug 27, 2017 at 20:54
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    Turn USB debugging off and On again. Only way it worked for me...
    – Akintunde
    Commented May 8, 2022 at 5:42