when i tried to run the emulator i am getting the error message as ,

[2009-04-23 15:30:37 - adb]
[2009-04-23 15:30:37 - adb]This application has requested the Runtime to terminate it in an unusual way.
[2009-04-23 15:30:37 - adb]Please contact the application's support team for more information.
[2009-04-23 15:30:37 - DeviceMonitor]Adb connection Error:An existing connection was forcibly closed by the remote host
[2009-04-23 15:30:37 - DeviceMonitor]Error reading jdwp list: An existing connection was forcibly closed by the remote host
[2009-04-23 15:30:38 - DeviceMonitor]Connection attempts: 1
[2009-04-23 15:30:40 - DeviceMonitor]Connection attempts: 2
[2009-04-23 15:30:42 - DeviceMonitor]Connection attempts: 3
[2009-04-23 15:30:44 - DeviceMonitor]Connection attempts: 4
[2009-04-23 15:30:46 - DeviceMonitor]Connection attempts: 5
[2009-04-23 15:30:48 - DeviceMonitor]Connection attempts: 6
[2009-04-23 15:30:50 - DeviceMonitor]Connection attempts: 7
[2009-04-23 15:30:52 - DeviceMonitor]Connection attempts: 8
[2009-04-23 15:30:54 - DeviceMonitor]Connection attempts: 9
[2009-04-23 15:30:56 - DeviceMonitor]Connection attempts: 10
[2009-04-23 15:30:58 - DeviceMonitor]Connection attempts: 11
[2009-04-23 15:30:59 - adb]ADB server didn't ACK
[2009-04-23 15:30:59 - DeviceMonitor]adb restart attempts: 1
[2009-04-23 15:30:59 - adb]* failed to start daemon *
[2009-04-23 15:31:01 - DeviceMonitor]Connection attempts: 12
[2009-04-23 15:31:02 - adb]ADB server didn't ACK
[2009-04-23 15:31:02 - adb]* failed to start daemon *
[2009-04-23 15:31:02 - DeviceMonitor]adb restart attempts: 2
[2009-04-23 15:31:04 - DeviceMonitor]Connection attempts: 13
[2009-04-23 15:31:05 - adb]ADB server didn't ACK
[2009-04-23 15:31:05 - adb]* failed to start daemon *
[2009-04-23 15:31:05 - DeviceMonitor]adb restart attempts: 3
[2009-04-23 15:31:07 - DeviceMonitor]Connection attempts: 14
[2009-04-23 15:31:08 - adb]ADB server didn't ACK
[2009-04-23 15:31:08 - adb]* failed to start daemon *
[2009-04-23 15:31:08 - DeviceMonitor]adb restart attempts: 4
[2009-04-23 15:31:10 - DeviceMonitor]Connection attempts: 15
[2009-04-23 15:31:11 - adb]ADB server didn't ACK
[2009-04-23 15:31:11 - adb]* failed to start daemon *
[2009-04-23 15:31:11 - DeviceMonitor]adb restart attempts: 5
[2009-04-23 15:31:13 - DeviceMonitor]Connection attempts: 16
[2009-04-23 15:31:14 - adb]ADB server didn't ACK
[2009-04-23 15:31:14 - DeviceMonitor]adb restart attempts: 6
[2009-04-23 15:31:14 - adb]* failed to start daemon *
[2009-04-23 15:31:16 - DeviceMonitor]Connection attempts: 17
[2009-04-23 15:31:19 - DeviceMonitor]adb restart attempts: 7
[2009-04-23 15:31:19 - adb]ADB server didn't ACK
[2009-04-23 15:31:19 - adb]* failed to start daemon *
[2009-04-23 15:31:21 - DeviceMonitor]Connection attempts: 18
[2009-04-23 15:31:22 - adb]ADB server didn't ACK
[2009-04-23 15:31:22 - adb]* failed to start daemon *
[2009-04-23 15:31:22 - DeviceMonitor]adb restart attempts: 8
[2009-04-23 15:31:24 - DeviceMonitor]Connection attempts: 19
[2009-04-23 15:31:25 - adb]ADB server didn't ACK
[2009-04-23 15:31:25 - adb]* failed to start daemon *
[2009-04-23 15:31:25 - DeviceMonitor]adb restart attempts: 9
[2009-04-23 15:31:27 - DeviceMonitor]Connection attempts: 20
[2009-04-23 15:31:28 - adb]ADB server didn't ACK
[2009-04-23 15:31:28 - adb]* failed to start daemon *
[2009-04-23 15:31:28 - DeviceMonitor]adb restart attempts: 10
[2009-04-23 15:31:30 - DeviceMonitor]Connection attempts: 21

Hi,
this error comes sometime for fixed that just stop the process of adb.exe in task manager and again start the emulator it will work.

As Alpesh said, you must finish adb.exe. Personally, I like to open Command Prompt and type the following lines:

> adb kill-server

It finishes adb.exe process. It should return the message:
* server not running *

Then I restart the process:

> adb start-server

It restarts adb.exe. It should return the message:
* daemon not running. starting it now*
* daemon started successfully *

Then, try to run your project again. At least for me, this problem happened not so often after I increase my memory capacity (from 512MB to 1GB), but I don't know exactly if this problem has relation with the pc memory.

Well, if after using kill-server and start-server the problem persists, then close the emulator and start it again. If the problem is still happening, unfortunatelly you have to restart your pc.



Good luck!

Regards,