Microsoft KB Archive/327632

= A stop error occurs when you have installed many programs that use filter drivers in Windows 2000 =

Article ID: 327632

Article Last Modified on 10/26/2006

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APPLIES TO


 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Professional Edition
 * Microsoft Windows 2000 Advanced Server

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This article was previously published under Q327632





SYMPTOMS
When you modify the real-time or the auto-protect settings of an antivirus program, or when you run a real-time file system protection program on the same computer where an antivirus program is running, the computer may stop responding and generate a stop error.



CAUSE
This problem may occur when you have installed two or more programs that use filter drivers. Typically, you experience this problem when you have an antivirus program that is running a form of real-time protection. However, this problem does not occur only with antivirus programs.

After the Ntfs.sys driver creates an object, the driver determines the remaining size of the stack. When you have two or more filter drivers that are running, the stack size of the Ntfs.sys driver decreases rapidly. When the Ntfs.sys driver tries to create a new object, and there is not sufficient stack space available, a stack overflow occurs and causes a stop error.



Service pack information
To resolve this problem, obtain the latest service pack for Microsoft Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

260910 How to obtain the latest Windows 2000 service pack

Hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
No prerequisites are required.

Restart requirement
You do not have to 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 --  03-Oct-2002  22:45  5.0.2195.6078     513,616  Ntfs.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section of this article. This problem was first corrected in Windows 2000 Service Pack 4.



MORE INFORMATION
After you install this hotfix, or when you install Windows 2000 Service Pack 4, the Ntfs.sys driver posts a new request if there is not sufficient stack space available. For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

816915 New file naming schema for Microsoft Windows software update packages

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

Keywords: kbhotfixserver kbqfe kbqfe kbbug kbfix kbwin2000presp4fix KB327632

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