The connection to adb is down, and a severe error has occurred [duplicate]

Question

Possible Duplicate:
The connection to adb is down, and a severe error has occured

I am currently trying to develop an application for Android in the latest release of Eclipse. When I try to build and run, the following comes up:

[2011-02-17 17:08:03 - <ProgramName>] The connection to adb is down, and a severe error has occured. [2011-02-17 17:08:03 - <ProgramName>] You must restart adb and Eclipse. [2011-02-17 17:08:03 - <ProgramName>] Please ensure that adb is correctly located at 'C:\<sdk-directory>s\platform-tools\adb.exe' and can be executed. 

Now, I have updated the ADT plugin, I have the latest version of the Android SDK; adb.exe is, in fact, in the platform-tools directory and can be executed. I've tried everything I found on Google:

• I tried adb kill-server and adb start-server
• I tried to run it with an without an emulator started
• I have the given directory in my PATH (I tried with just the platform-tools in the path and I tried with having both platform-tools and tools in my PATH).

Notes: I am running Windows 7. Also, I have previously tested apps in Eclipse. This error is new to me since upgrading the SDK.

Answer 1

I just got the same problem and to fix it, I opened the task manager and killed the adb.exe process, then I restarted Eclipse.

Answer 2

Reinstall everything??? no way! just add the path to SDK tools and platform tools in your classpath from Environment Variables. Then restart Eclipse.

other way go to Devices -> Reset adb, or simply open the task manager and kill the adb.exe process.