|Windows Update no longer initiates on Windows 2000 unless the following 4 requirements are met:|
1) Windows 2000 Service Pack 4 is installed here (alternate link)
2) Update Rollup 1 for Windows 2000 is installed here (alternate link)
3) Internet Explorer 6.0 Service Pack 1 is installed (here)
4) Windows Update Agent 3.0 is installed - most important! (alternate link)
Once these conditions are met, Windows Updates will operate normally (see here, here, and here)
New updates are no longer being released as support terminated in 2010. However, this should help those users that are having problems updating Windows 2000 with the existing patches and updates.