Service Pack 1 (SP1) provides updates to the Windows 2000 family of operating systems. These updates are a collection of fixes in the following areas: setup, application compatibility, operating system reliability, and security issues. SP1 is not considered a required upgrade; Microsoft recommends that customers review the SP1 documentation found under Learn More to determine whether to install SP1.
Note: In a settlement agreement reached in January 2001 to resolve a dispute over Microsoft's distribution of its Java implementation, Sun and Microsoft agreed to limit the duration of Microsoft's use of Sun's source code and compatibility test suites to support the Microsoft Java Virtual Machine (MSJVM). Microsoft began phasing out the MSJVM in its products after the settlement was reached. Recognizing the need to provide a smooth transition for current users of the MSJVM, Sun Microsystems and Microsoft have agreed to extend Microsoft's license to use Sun's Java source code and compatibility test suites. This extension allows Microsoft to support the MSJVM until September 30, 2004, and gives Microsoft the ability to address potential security issues, effectively giving customers another year to manage the transition. As a part of the phase out of the MSJVM, Windows 2000 Service Pack 1 (which includes the MSJVM) will no longer be available for download after June 30, 2004.
