Mainstream support for Office 2000 ended on June 30, 2004, and extended support ended on July 14, 2009. The first update was called Service Release 1 (SR-1), while subsequent updates were referred to as service packs. Microsoft released three service packs for Office 2000 throughout its life cycle. It is the last version of Microsoft Office to support Windows 95 and Windows NT 4.0 service packs 3–5 as the following version, Microsoft Office XP only supports Windows NT 4.0 SP6 or later.

It is not officially supported on Windows Vista or later versions of Windows. Office 2000 requires Windows 95 or Windows NT 4.0 SP3 at the minimum. Office 2000 is incompatible with Windows NT 3.51 and earlier versions of Windows. A Mac OS equivalent, Microsoft Office 2001, was released on October 11, 2000. It is the successor to Office 97 and the predecessor to Office XP. Office 2000 was released to manufacturing on March 29, 1999, and was made available to retail on June 7, 1999. Microsoft Office 2000 (version 9.0) is a release of Microsoft Office, an office suite developed and distributed by Microsoft for the Windows family of operating systems.

Office 10 activator