In response to the vulnerabilities and security errors detected inSQL Server 2000, Microsoft offers its users SQL Server 2000 SP4, an incremental pack that gathers all the revisions from earlier Service Packs with new improvements.
SQL Server 2000 SP4 is made up by a collection of three files that include the updates for the following SQL Server 2000 components:
- Databasecomponents, updated by launching: SQL2000-KB884525-SP4-x86.EXE. Updates your 32-bit database components of SQL Server 2000 including Database Engine, Replication, Client Connectivity components and Tools
- Analysis servicecomponents: for which purpose SQL2000.AS-KB884525-SP4-x86.EXE is used.
- SQL Server 2000 desktop enginecomponents: updated by means of SQL2000.MSDE KB884525-SP4-x86.EXE.
Microsoft always advises its users to update their products, so if you use SQL Server 2000 and you haven't updated it, you have to download SQL Server 2000 SP4.

This download requires that you have SQL Server 2000 installed.