Microsoft KB Archive/810159

= &quot;PAGE_FAULT_IN_NONPAGED_AREA&quot; Error Message When You Try to Switch Tasks by Using ALT+TAB =

Article ID: 810159

Article Last Modified on 2/1/2007

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APPLIES TO


 * Microsoft Windows 2000 Service Pack 3
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Service Pack 3
 * Microsoft Windows 2000 Service Pack 2
 * Microsoft Windows 2000 Service Pack 1
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
When you try to switch tasks by pressing ALT+TAB, the operating system may stop unexpectedly, and you may receive an error message similar to the following:

PAGE_FAULT_IN_NONPAGED_AREA

0x00000050 (0xA2958ECC, 0x00000000, 0xA0064601, 0x00000001)



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 fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix 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 fix. 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 typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix 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

22-Nov-2002 17:54 5.0.2195.5265    42,256  Basesrv.dll 22-Nov-2002 17:54 5.0.2195.5907   222,992  Gdi32.dll 22-Nov-2002 17:54 5.0.2195.6137   709,392  Kernel32.dll 22-Nov-2002 17:54 5.0.2195.6090   332,560  Msgina.dll 22-Nov-2002 17:54 5.0.2195.6097   379,664  User32.dll 22-Nov-2002 17:54 5.0.2195.6085   370,448  Userenv.dll 22-Nov-2002 17:53 5.0.2195.6139 1,643,344  Win32k.sys 29-Oct-2002 10:59 5.0.2195.6108   179,472  Winlogon.exe 22-Nov-2002 17:54 5.0.2195.6097   243,472  Winsrv.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article. This problem was first corrected in Microsoft Windows 2000 Service Pack 4.



MORE INFORMATION
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

For additional information about how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:

296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot

Additional query words: blue screen bluescreen

Keywords: kbbug kbfix kbshell kbwin2000presp4fix kbqfe kbwin2ksp4fix kbhotfixserver KB810159

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