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Your modem stops responding in Windows XP

Article ID: 332176 - View products that this article applies to.

Hotfix Download Available

This article was previously published under Q332176

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SYMPTOMS

Your modem may stop responding. To use the modem again, you must restart your computer.

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This problem occurs because the Modem.sys modem driver enters an infinite loop. The modem driver enters an infinite loop when a program tries to access the device when no phone call is initiated and no voice modem functionality is in use.

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RESOLUTION

Service pack information

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

322389

(http://support.microsoft.com/kb/322389/EN-US/ )

How to obtain the latest Windows XP service pack

Hotfix information

A supported hotfix is 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 software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site:

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

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

Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

You must have Windows XP Service Pack 1 installed to apply this hotfix.

Restart requirement

You must restart your 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) 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     Platform
   -----------------------------------------------------------------
   23-Oct-2002  12:38  5.3.5.0        24,576  Xpsp1hfm.exe       x86
   23-Oct-2002  12:37  5.3.5.0        59,904  Xpsp1hfm.exe     IA-64
   05-Nov-2002  22:06  5.1.2600.1138  28,800  Modem.sys          x86
   05-Nov-2002  22:06  5.1.2600.1138  98,048  Modem.sys        IA-64

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STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in Microsoft Windows XP Service Pack 2.

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MORE INFORMATION

For additional 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

(http://support.microsoft.com/kb/824684/ )

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

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