Microsoft KB Archive/906278

= An external serial modem does not return to autoanswer mode and incoming connections do not succeed after you turn off and then turn on the modem in Windows Server 2003 SP1 =

Article ID: 906278

Article Last Modified on 3/25/2007

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APPLIES TO

 Microsoft Windows Server 2003 Service Pack 1, when used with:  Microsoft Windows Server 2003, Standard Edition (32-bit x86)

 Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)

 Microsoft Windows Server 2003, Web Edition

 Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems</li></ul> </li></ul>

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SYMPTOMS
On a computer that is running Microsoft Windows Server 2003 with Service Pack 1 (SP 1), an external serial modem does not return to autoanswer mode after you turn off and then turn on the modem. Incoming connections do not succeed.

Note This problem does not occur after you turn off and then turn on the computer.

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CAUSE
This problem occurs because of a race condition in the Windows Telephony API (TAPI). A race condition occurs when a resource is accessed by two or more threads at the same time.

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Service pack information
To resolve this problem, obtain the latest service pack for Windows Server 2003. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

Prerequisites
To apply this hotfix, you must have Windows Server 2003 Service Pack 1 (SP1) installed on the computer.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.

Windows Server 2003, Enterprise Edition for x64-based Systems
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WORKAROUND
To work around this problem, restart the Routing and Remote Access service.

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STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section. This problem was first corrected in Windows Server 2003 Service Pack 2.

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MORE INFORMATION
For more information about the terminology that is used in this article, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: auto-answer switch

Keywords: kbwinserv2003sp2fix kbqfe kbhotfixserver kbbug kbfix kbpubtypekc KB906278

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