I have spent around 5 hrs on this problem. I have read the same question on stackoverflow, but none of the solutions solved my problem... First, it gives me:
[2013-02-28 14:48:21 - adb] ADB server didn't ACK
[2013-02-28 14:48:21 - adb] * failed to start daemon *
To solve that, I kill the adb.exe in task manager, restart eclipse. Then go to DDMS, reset adb. NO LUCK...
Then, I go to command line window, type adb kill-server and adb start-server, it gives me:
adb server is out of date. killing...
ADB server didn't ACK
fail to start deamon
Now I don't know what to do. I have a project to develop on eclipse, so really need to solve this problem soon. Someone please help!!
(As many solution indicated, I killed my adb.exe thousands of times, but it showed up immediately in task manager after 2 seconds. )
solved the problem. Because I have a small assistant plugin installed on my pc, it has an adb.exe running in the background all the time. So after I uninstalled the plugin, the error has gone!