emulator not showing in adb devices

if i start an emulator using the android SDK r12 it does not show up i开发者_高级运维n the adb devices list

win7 64 // android 2.2 (not an actual hardware device - just the emulator)

what could be the problem?

You can also try to :

 adb kill-server
 adb start-server

to restart the adb server. Maybe something went wrong with the adb-server. This happens a lot, and many such issues can be solved by restarting the server.

Make sure that you are at the path and give command.

android-sdk_r12-windows\android-sdk-windows\platform-tools>adb devices

I am also using win7 64 It is working for me. If you are getting any error. Mention it.

Also make sure that USB debugging is enabled in your device.

Settings>Applications>Development>USB debugging

Can you able to see device in eclipse? If not then close your emulator and open it again.

Sometimes even adb itself bugs, for me always works good old pkill:

pkill -9 adb