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After you install the Windows XP update that is described in the following Microsoft Knowledge Base article, some program compatibility fixes (also known as "shims") that you have configured may not work:
328310 MS02-071: Flaw in Windows WM_TIMER Message Handling Can Enable Privilege Elevation
Also, if you configure a Setup program to check the results of the InstallShield DoInstall function during a program installation, your program installations may not work because the DoInstall function always returns a non-zero result.
This problem occurs because the 328310 package for Windows XP installs an earlier version of the Application Database File, Sysmain.sdb. This file contains both program-matching information and compatibility fixes.
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
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 XP Service Pack 2.
The 328310 update package replaces the version of the Sysmain.sdb file that is included with Windows XP Service Pack 1 (SP1). However, it does not replace later versions of this file. For example, after you install the version of Sysmain.sdb that is described in this article, the Sysmain.sdb file that is described in this article contains the following changes from the version that is installed by the 328310 package:
The following Program Compatibility update is modified:
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