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)

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

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Restart the eclipse once...and try again

...

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

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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

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

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

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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.

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