adb server version doesn't match this client

Question

Whenever I try to run adb devices:

            $ adb devices
            * daemon not running. starting it now *
            * daemon started su         


        

Answer 1

Helped for me: stop HTC Sync (in system tray) and rename HTC's adb.exe (C:\Program Files (x86)\HTC\HTC Sync 3.0\adb.exe).