Microsoft KB Archive/332176

= Your modem stops responding in Windows XP =

Article ID: 332176

Article Last Modified on 8/29/2007

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APPLIES TO


 * Microsoft Windows XP Home Edition
 * Microsoft Windows XP Professional

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This article was previously published under Q332176





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



CAUSE
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.



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 How to obtain the latest Windows XP service pack

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
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



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 Microsoft Windows XP Service Pack 2.



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

Additional query words: hang hung endless reboot power down cycle shutdown ioctl octl WAVE_STOP_READ_COMPLETE function

Keywords: kbhotfixserver kbqfe kbwinxpsp2fix kbmodem kbmm kbhardware kbinterop kbbug kbfix kbqfe kbwinxppresp2fix KB332176

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