Microsoft KB Archive/899418

= Programs may not be able to make a telephone connection after you disconnect and then reconnect a serial cable in Windows XP with Service Pack 2 =

Article ID: 899418

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Service Pack 2

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SYMPTOMS
After you disconnect and then reconnect a serial cable, programs may not be able to use a serial modem device to make a telephone connection if the device is configured to accept incoming connections.

Additionally, when you use HyperTerminal, you may experience a Telephony API (TAPI) error. You may also be prompted to restart HyperTerminal. This problem occurs even after you make sure that a modem is installed by using the Phone and Modem item in Control Panel.

This behavior may also occur after you turn the modem off and then turn the modem on.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
To apply this hotfix, you must have Microsoft Windows XP Service Pack 2 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.   Date         Time   Version        Size     File name --  18-May-2005  16:09  5.1.2600.2679  206,848  Unimdm.tsp



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 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: power cycle

Keywords: kbqfe kbhotfixserver kbwinxppresp3fix kbwinxpsp3fix kbfix kbbug KB899418

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