ADB not responding. You can wait more, or kill “adb.exe” … windows 8

Question

When I try to test my Android application with an android emulator as always I now suddenly get an error message. I\'m working with Windows 8. So far I tried the following thing

Answer 1

Following works for me every time: go to File->Invalidate Caches/Restart select Invalidate and Restart

And, You are good to go.

Answer 2

Maybe HTTP Proxy blocked the localhost 127.0.0.1:5037
If you have config the HTTP Proxy, make sure to exclude the localhost like picture below

Also, port can also be blocked by the firewall and anti-virus firewall, please notice as well.

Answer 3

In case it helps anyone else, for me the problem was related with the USB hub that the tablet was plugged into on the computer (unplugging the webcam which was in use fixed it).

Answer 4

I finally just restarted the computer, and that solved the issue for me.

Answer 5

I saw this on a Mac OS X.

I shut down Android Studio and ran adb get-state in the terminal. When I started Android Studio back up, the warning had gone away.

BTW, I did just try restarting Android Studio without any luck. I am sure a restart of OS would have fixed it too.

Answer 6

On OSX helped:

• Close Android Studio

• Kill all processess using 5037 port

  sudo lsof -i |grep 5037

  sudo kill PID_NUMBER

• Run adb devices from console

  adb devices