Android emulator-5554 offline

In such a case, you can do all of the following in order to be assured that your emulator starts working again :

1. Go to cmd and type adb kill-server
2. Go to task manager and find adb in processes. If you find one, right click on it and click on end process tree.
3. In eclipse, go to Window>Android Virtual Device Manager, click on the AVD you want to launch, click on start and uncheck "Launch From Snapshot" and then click on launch.

That's it! It will take a while and it should resolve your problem.

1 . Simply "Wipe data" to fix this issue.

2 . If it doesn't work, go to emulated device and enable developer options > enable usb debugging

The way that Android detects emulators is by scanning ports starting at port 5555.

The number you see in the adb devices list (in your case 5554) will be one less than the port that adb is finding open.

You probably have a process running that is listening on port 5555. To get rid of the "offline" device, you will need to find that application and close it or reconfigure it to listen to a different port.