Adb Error on “adb devices”

Question

When I type in "adb devices", the output is "error: protocol fault (no status)". The adb functionality is broken in both Android Studio and Eclipse, so it's a problem with the connection, I believe. I tried to kill adb.exe from the Task Manager, but it's not listed in the processes. Any tips?

Answer 1

Try to open the this directory :

adt-bundle-windows-x86_64-20130917\sdk\platform-tools

Hold shift + right mouse click. Select open command prompt here.

After that,

in the command window type 

adb kill-server

and then

adb start-server

then,

adb devices

See if the adb is started and if your device is visible on eclipse or android studio .

Answer 2

My problem was my parental controls software. The adb.exe works fine with it disabled.

Answer 3

Same problem i faced in past, the solution worked for me is: Navigate to the plateform-tools(it is under SDK) and execute following commands on cmd.

• C:\\Android\\android-sdk\\platform-tools>set ADB_TRACE=1

• C:\\Android\\android-sdk\\platform-tools>adb start-server

I hope it will help you

Answer 4

更换您的USB电缆即可解决问题。