Error "AdbCommandRejectedException: device not found" in Eclipse using Android emulator

I've tried to change the build of an application, and now eclipse doesn't work.

There is nothing in the console, and when I launch the debug, there is nothing on the log.

I just got this message :

[2011-03-31 11:22:58 - Logcat]device not found
com.android.ddmlib.AdbCommandRejectedException: device not found
    at com.开发者_StackOverflowandroid.ddmlib.AdbHelper.setDevice(AdbHelper.java:736)
    at com.android.ddmlib.AdbHelper.executeRemoteCommand(AdbHelper.java:373)
    at com.android.ddmlib.Device.executeShellCommand(Device.java:284)
    at com.android.ddmuilib.logcat.LogPanel$3.run(LogPanel.java:527)

Try adb kill-server and adb start-server to restart the adb. It can be found in your android sdk directory, subfolder plattform-tools.

Restart the eclipse once...and try again

...

on-off your USB debugging on mobile phone or your AVD maybe help you solve this problem. This method is work for me :)

I encountered a similar issue on Linux. It turned out that my adb server was running under my user account, so running the following fixed the issue:

sudo adb kill-server
sudo adb start-server

I also faced same problem. Go to developers Option and then Revoke USB debugging authorization.

Restart the eclipse and check if the error continues. Also check if you have correct version of AVD manager installed or not.

If you are using the Emulator and restarting adb doesn't solve the problem then close the current running Android virtual device and Launch it again.

For some reason my device had gone offline, reconnecting the device resolved the issue.