Article ID: 810159 - View products that this article applies to.
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:
0x00000050 (0xA2958ECC, 0x00000000, 0xA0064601, 0x00000001)
Service Pack InformationTo 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:
(https://support.microsoft.com/kb/260910/EN-US/ )How to Obtain the Latest Windows 2000 Service Pack
Hotfix InformationA 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.
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, submit a request to 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=supportNote 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. 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
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.
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:
265173For 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:
(https://support.microsoft.com/kb/265173/EN-US/ )The Datacenter Program and Windows 2000 Datacenter Server Product
(https://support.microsoft.com/kb/296861/EN-US/ )Use QChain.exe to Install Multiple Hotfixes with One Reboot
Article ID: 810159 - Last Review: February 1, 2007 - Revision: 1.10