Windows 2000 was specifically designed to allow customers to add additional application support easily after the product shipped. The October 2000 package is the fourth release of additional application support and it includes software compatibility updates for Windows 2000.
The October 2000 package includes compatibility updates of the August 2000, May 2000, and February 2000 packages.
Prior to the release of Windows 2000, Microsoft focused compatibility testing on the top volume business applications (thousands of applications run out-of-the-box). With that testing complete, as you can see below, Microsoft has broadened the original focus to address some minor compatibility issues with a few of the more popular home/entertainment/gaming applications.
Note You must be an administrator to install this update on your computer.