How to fix: Error device not found with ADB.exe

Question

In cmd when I try to do the command:

adb shell

it shows device not found error. Can someone help me please. It\'ll be appreciated.

Answer 1

Try any of the following solutions. I get errors with adb every now and then. And one of the following always works.

Solution 1
Open command prompt as administrator and enter

1. adb kill-server
2. adb start-server

Solution 2
Install drivers for your phone if you're not testing on emulator.

Solution 3
Open android sdk manager and install "Google USB Driver" from extras folder. (attached screenshot)

Android SDK Google USB Driver missing

Solution 4
Go to settings > Developer Options > Enable USB Debugging.
(If you don't see Developer Options, Go to Settings > About Phone > Keep tapping "Build number" until it says "You're a developer!"

Enable USB Debugging

Answer 2

I have a Droid 3 (Verizon). I went to Motorola here and found the driver for the device 'Motorola ADB Interface' which was showing in device manager. It's kind of a big download for just the driver, but during installation it found it and installed correctly.

Answer 3

Another issue here is that you likely need to turn off "connect as media device" to be able to connect with adb.

Answer 4

This worked for me, my AVG anti virus was deleting my adb.exe file. If you have AVG try: 1) opening the program 2) go to options 3) go to the virus vault and click on it 4) find your adb program, click on it, and press RESTORE at the bottom This will move the file back to its original place. However, unless you turn off the AVG it will delete the file again.
After this android studio located the file. Good luck.