Mswheel.exe Is Not Run When You Roll the IntelliMouse Wheel

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The Mswheel program is designed to unload itself if it detects that the operating system has built-in support for the wheel. The only operating systems with built-in support for the wheel are Microsoft Windows NT Server version 4.0 and Microsoft Windows NT Workstation version 4.0.

The Mswheel program runs in the following versions of Microsoft Windows:

Microsoft Windows 95 retail release (version 4.00.950)
Microsoft Windows 95 OEM Service Release 1 (version 4.00.950a)
Microsoft Windows 95 OEM Service Release 2 (version 4.00.950b)
Microsoft Windows NT Server version 3.51 (version 3.51.1057)
Microsoft Windows NT Workstation version 3.51 (version 3.51.1057)
Microsoft Windows 98 retail release (version 4.10.1998)

You can determine the version of Windows you are running by following these steps:

1. Click Start, point to Settings, and then click Control Panel.
2. Double-click System. The version of Windows you are running is listed on the General Tab under System.