Microsoft KB Archive/943305

= Groove uses 99% of the CPU and cannot transfer data after you install or update AT&T Communication Manager =

Article ID: 943305

Article Last Modified on 10/18/2007

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APPLIES TO


 * Groove Virtual Office 3.0 File Sharing Edition
 * Groove Virtual Office 3.0 Professional Edition
 * Groove Virtual Office 3.0 Project Edition
 * Groove Virtual Office 3.0 Trial Edition
 * Groove Virtual Office 3.1 File Sharing Edition
 * Groove Virtual Office 3.1 Professional Edition
 * Groove Virtual Office 3.1 Project Edition
 * Groove Virtual Office 3.1 Trial Edition
 * Microsoft Office Groove 2007

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SYMPTOMS
Consider the following scenario. You use an AT&T Wireless card. You install or update the AT&T Communication Manager software. Then, Microsoft Office Groove 2007 or an earlier version of Groove starts to transfer data. When this occurs, you may receive a &quot;stop&quot; error.

In this scenario, when you restart Windows and then start Groove, Groove uses up to 99% of the CPU resources. Additionally, Groove cannot transfer data.

Note The Groove process does not stop when you exit Groove. Additionally, you cannot stop the Groove process by using Windows Task Manager. To stop the Groove process and to free the CPU, you must restart Windows.



CAUSE
This issue is caused by the Tcpipbm.sys file. Tcpipbm.sys is part of the Bytemobile Optimization Client. By default, Communication Manager installs and uses this client. When this client is being used, Groove cannot transfer data.

Additionally, conflicts may occur between this client and Groove Virtual Office 3.1 and earlier versions of Groove. When these conflicts occur, Communication Manager unregisters several Groove DLLs.

Groove cannot reregister the DLLs when Communication Manager uses the Bytemobile Optimization Client. When Groove tries to send data or to access these DLLs, Groove uses all the available CPU resources.



WORKAROUND
To use Groove with an AT&T Wireless card, uninstall Communication Manager, and then reinstall Communication Manager without the Bytemobile Optimization Client.

For more information about how to do this, visit the following Web site:

http://supportcingular.atgnow.com/cng/tutorials/KB75356.html



MORE INFORMATION
The information and the solution in this document represents the current view of Microsoft Corporation on these issues as of the date of publication. This solution is available through Microsoft or through a third-party provider. Microsoft does not specifically recommend any third-party provider or third-party solution that this article might describe. There might also be other third-party providers or third-party solutions that this article does not describe. Because Microsoft must respond to changing market conditions, this information should not be interpreted to be a commitment by Microsoft. Microsoft cannot guarantee or endorse the accuracy of any information or of any solution that is presented by Microsoft or by any mentioned third-party provider.

Microsoft makes no warranties and excludes all representations, warranties, and conditions whether express, implied, or statutory. These include but are not limited to representations, warranties, or conditions of title, non-infringement, satisfactory condition, merchantability, and fitness for a particular purpose, with regard to any service, solution, product, or any other materials or information. In no event will Microsoft be liable for any third-party solution that this article mentions.

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