The connection to ADB are down, and a severe error has occured. Problem solving

Encountered a problem description:

Run the Android console output

[2013-06-25 11:10:32-mywellnesstracker] The connection to ADB are down, and a severe error has occured.
[2013-06-25 11:10:32-mywellnesstracker] You must restart ADB and Eclipse.
[2013-06-25 11:10:32-mywellnesstracker] Please ensure this adb is correctly located at ' E:\SDK\platform-tools\adb.exe ' and can be executed.

1. Select the menu "Help->check for Update" In Eclipse and select Update ADT. After the above operation is completed, restart the eclipse!

2. Enter the root directory of adb in cmd, type adb kill-server, then type Adb-startserver, and then restart Eclipse.

3. Kill the Adb.exe process in the Task Manager and restart Eclipse. If the adb.exe cannot be killed at this time, check if the pea pod is running, close the pea pod and try again.

4. See if there are adb.exe in the Platform-tools folder in the SDK path you installed, and if not, create a new folder Platform-tools and copy all the files in tools to Platform-tools.

5, after installing the mobile phone driver, close the wrist bean clip, restart Eclipse. Similar programs like the wrist bean clip do not open at the same time as Eclipse! You can also turn off the process of pea pods in task management.

6, the simulator is sometimes very unstable, sometimes to re-configure all the development environment, or you delete the emulator to create a new emulator.

7, may be the default port is occupied, in the CMD type netstat view, shut down the conflicting port program, or set a new port.

8. Add the Platform-tools directory and tools directory to the PATH environment variable.

9. Turn eclipse into DDMS mode and restart ADB and Eclipse.

10. Open the SDK and download the API and Android SDK Tools and Android SDK Platform-tools before you configure Eclipse.

11, switch the USB debugging.

12, restart the computer.

13, the previous method to try or not, it is recommended to re-install a system, it is best to change a system.

The connection to ADB are down, and a severe error has occured. Problem solving