Microsoft KB Archive/909946

= You may experience connection problems when you connect a device that is running Windows Mobile to a computer that is running Windows and ActiveSync 4.0 =

Article ID: 909946

Article Last Modified on 11/29/2007

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APPLIES TO


 * Microsoft ActiveSync 4.0

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SYMPTOMS
In some specific cases, you may experience connection problems when you connect a device that is running Microsoft Windows Mobile to a computer that is running Microsoft Windows and Microsoft ActiveSync 4.0.

Note We recommend that you use ActiveSync 4.0 only for devices that are running Microsoft Windows Mobile 5.0.

You may experience one of the following issues:
 * Connection between the device and the computer is dropped during data transfer or during synchronization.
 * Connection is never established between the computer and the device. Additionally, you do not receive any visual feedback.
 * Synchronization is partially completed. However, synchronization does not complete as expected.
 * The computer does not work as expected when it is connected to the device.



CAUSE
This problem occurs because desktop firewall applications or applications that manage network traffic appear to conflict with the TCP traffic between the device and the computer. You may experience this problem if you are running applications such as the following:
 * Desktop firewall applications
 * Network connection managers
 * VPN clients
 * Network traffic optimizers
 * Parental control utilities

Additionally, you may experience this problem if you are using a USB hub or a docking station.



RESOLUTION
For specific troubleshooting steps and a disclaimer that you should read before you change any settings on the computer, on the network, or on other equipment, visit the following Microsoft Web site:

http://www.microsoft.com/windowsmobile/help/activesync/default.mspx



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about Windows Mobile, visit the following Microsoft Web site:

http://www.microsoft.com/windowsmobile/default.mspx

Keywords: kbtshoot kbbug kbprb KB909946

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