On a Windows XP-based computer with Family Safety installed, you receive an error message: “The procedure entry point IsThreadDesktopComposited could not be located in the dynamic link library USER32.dll”

Source: Microsoft Support

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When you open the Family Safety Filter on a Windows XP-based computer, you receive the following error message:

 “The procedure entry point IsThreadDesktopComposited could not be located in the dynamic link library USER32.dll”

This issue occurs when the dwmapi.dll has been installed in the Windows\System32 folder.

Note: dwmapi.dll is a Windows Vista file that may have been installed by another application.

To resolve this issue, remove the .dll file by following the steps listed below:

1. 
   Click Start, and then click My Computer.
2. 
   Double-click the hard disk icon for the drive where Windows is installed.  In most cases this will be C:\.
3. 
   Double-click the WINDOWS folder, and then double-click the system32 folder.
4. 
   Browse to the file dwmapi.dll.
5. 
   Right-click the file, and then click Delete.

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