Then typing "adb devices" returned my phone's serial number followed by "device" showing it was available. I instantly received the RSA Fingerprint Key window on my >G3 allowing connection between the two devices. All I had to do was delete the adbkey file (there was also a file named "adbkey.pub" which >I deleted as well), restart the adb server in command prompt (adb start-server) and plug my phone in. Mine was located in my user folder (C:\Users*username*.android). If there is no key file when ADB runs, it will generate one automatically. I'm assuming my G3 was rejecting a bad key and disallowing my laptop to connect to it via ADB.ĪDB saves a key file in one of multiple places on a Windows computer, the first is in the location where adb.exe is (C:\android), the second is in the user's >profile (C:\Users*username*.android), the third place is in the Windows system files (C:\Windows\System32\config\systemprofile.android), the file is >simply named "adbkey" with no extension. There turned out to be a problem with my laptop's ADB RSA key. Try killing adb adb kill-serverthen disable usb debugging and then start adb by adb start-server then enable usb debugging and plug phone again and huh don't let phone sleep between process
Therefore I imagine it is not the USB cable that is faulty. I have tried it on a separate machine that runs fedora and this works fine with no issues, the promopt appears right away. Connecting as PTP device and MTP device.Toggling enabling ADB Integration from within Android Studio.Simple unplugging and replugging the USB cable.Restarting (the device, developer options, the machine).Running adb kill-server and adb devices.I know I should be expecting the RSA key prompt but this never appears. I have recently downloaded and installed Android Studio and the SDK and my device is detected when it's connected via USB but the device either appears as 'unauthorized' or 'offline'. I am trying to connect my Galaxy S5 to my computer running Ubuntu 14.04 so I can do some android development.
First time asker, so apologies if I get the conventions wrong. This is quite a common question, but none of the solutions appear to work for me.
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