Microsoft Knowledge Base Article - Q322913

WM_TIMER Messages May Stop Being Delivered to Programs in Windows 2000

The information in this article applies to:
  • Microsoft Windows 2000 Server, versions SP1, SP2
  • Microsoft Windows 2000 Advanced Server, versions SP1, SP2
  • Microsoft Windows 2000 Professional, versions SP1, SP2


WM_TIMER timer messages may stop being delivered to programs. This may cause portions of programs to stop working. For example, if a program updates a window when it receives a WM_TIMER message, this window updating stops.


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 fix.

To resolve this problem immediately, download the fix by clicking the download link later in this article or 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: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.

The following file is available for download from the Microsoft Download Center:
Release Date: October 28, 2002

For additional information about how to download Microsoft Support files, click the following article number to view the article in the Microsoft Knowledge Base:
    Q119591 How to Obtain Microsoft Support Files from Online Services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on secure servers that prevent any unauthorized changes to the file.

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
   27-Jul-2002  16:50  5.0.2195.5265     42,256  Basesrv.dll
   27-Jul-2002  16:50  5.0.2195.5907    222,992  Gdi32.dll
   27-Jul-2002  16:50  5.0.2195.4928    708,880  Kernel32.dll
   27-Jul-2002  16:50  5.0.2195.4733    332,560  Msgina.dll
   26-Jun-2001  00:17        47,808  User.exe
   27-Jul-2002  16:50  5.0.2195.5931    379,664  User32.dll
   27-Jul-2002  16:50  5.0.2195.5968    369,936  Userenv.dll
   17-Jul-2002  16:45  5.0.2195.5948  1,642,416  Win32k.sys
   03-May-2002  16:31  5.0.2195.5731    178,960  Winlogon.exe
   27-Jul-2002  16:50  5.0.2195.5935    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.


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:
    Q265173 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:
    Q296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot