Windows 2000 Service Pack 2 (SP2) provides the latest updates to the Windows 2000 family of operating systems. These updates are a collection of fixes in the following areas: application compatibility, operating system reliability, security, and setup. Windows 2000 SP2 includes the updates contained in Windows 2000 Service Pack 1 (SP1). Windows 2000 SP2 is not considered a required upgrade. To determine whether to install Windows 2000 SP2, Microsoft recommends that customers review the Windows 2000 SP2 documentation found under Learn More. (This site is in English.)

Typical download times for the Network installation:
All Platforms: 4.4 hours @ 56K | 9 minutes @ T1

Windows 2000 SP2 Encryption
Windows 2000 SP2 automatically upgrades your system to 128-bit encryption. It is not possible to disable or uninstall this feature. If you remove Windows 2000 SP2 after installation, your system continues to use 128-bit encryption; it does not revert to back to 56-bit encryption. Windows 2000 SP2 adds high encryption support for all Windows 2000 encryption-based services, including Kerberos, Encrypting File System, RAS, RPC, SSL/TLS, CryptoAPI, Terminal Services RDP, and IPSec. High encryption support improves the security of local data and online transactions, as well as any other content you share over networks or the Internet.

For more information on 128-bit encryption, read the High Encryption Market Bulletin. (This site is in English.)

Note Uninstalling Windows 2000 SP2 does not revert your computer to the standard encryption level. You can always uninstall Windows 2000 SP2, but your computer retains high encryption support. For a list of the updates included in Windows 2000 SP2, read Microsoft Knowledge Base (KB) Article Q282522. (This site is in English.)

• Operating System: Windows 2000 Professional, Windows 2000 Server, Windows 2000 Advanced Server, or Windows 2000 with Server Appliance Kit.
• Disk Space: The recommended space requirements depend on how the Service Pack is installed. The space requirements are the same whether you install from the Service Pack CD or from this Web site but are different if you install from a network distribution share.

How to Use
Restart your computer to complete the installation.

1. Click the Start button, point to Settings, and then click Control Panel.
2. Double-click Add/Remove Programs.
3. Click Windows 2000 Service Pack 2.
4. Click Change/Remove to uninstall Windows 2000 SP2.

1. Security Update, May 1, 2001
2. Security Update, February 1, 2001
3. Security Update, January 30, 2001
4. Security Update, January 16, 2001
5. Security Update, January 5, 2001
6. Security Update, December 20, 2000
7. Security Update, December 7, 2000
8. Security Update, November 27, 2000
9. Security Update, November 10, 2000
10. Security Update, November 8, 2000
11. Security Update, November 5, 2000
12. Security Update, November 3, 2000
13. Security Update, October 27, 2000
14. Security Update, October 17, 2000
15. Security Update, October 7, 2000
16. Security Update, October 6, 2000
17. Security Update, September 16, 2000
18. Security Update, September 10, 2000
19. Security Update, September 9, 2000
20. Security Update, September 1, 2000
21. Security Update, August 21, 2000
22. Security Update, August 19, 2000
23. Security Update, August 18, 2000
24. Security Update, August 17, 2000
25. Security Update, August 15, 2000
26. Security Update, June 6, 2000

1. Terminal Services Server Restart
2. Windows 2000 ISA Server Update
3. Removable Media Access Update
4. PC Card Bus Voltage Level Update
5. FrontPage 2000 Non-HTML File Save Update
6. VIA AGP Chipset Driver Update
7. Xenroll.dll File Signature Update
8. Windows 2000 File Replication Service Update