page_title: Windows 2000
section_title: Service packs
hierarchical_section_title: Windows 2000 / Service packs
caption_attribution_description: English: Windows 2000 SP4 install disc (French)
context_page_description: Windows 2000 is a business-oriented operating system that was produced by Microsoft in the United States and was released as part of the Windows NT family of operating systems. It was succeeded by Windows XP in 2001, releasing to manufacturing on December 15, 1999 and being officially released to retail on February 17, 2000. It is the successor to Windows NT 4.0.
  Four editions of Windows 2000 were released: Professional, Server, Advanced Server, and Datacenter Server; the latter was both released to manufacturing and launched months after the other editions. While each edition of Windows 2000 was targeted at a different market, they shared a core set of features, including many system utilities such as the Microsoft Management Console and standard system administration applications.
  Windows 2000 introduces NTFS 3.0, Encrypting File System, as well as basic and dynamic disk storage. Support for people with disabilities was improved over Windows NT 4.0 with a number of new assistive technologies, and Microsoft increased support for different languages and locale information.
context_section_description: Windows 2000 has received four full service packs and one rollup update package following SP4, which is the last service pack. Microsoft phased out all development of its Java Virtual Machine (JVM) from Windows 2000 in SP3. Internet Explorer 5.01 has also been upgraded to the corresponding service pack level.
  Microsoft had originally intended to release a fifth service pack for Windows 2000, but Microsoft cancelled this project early in its development, and instead released Update Rollup 1 for SP4, a collection of all the security-related hotfixes and some other significant issues. The Update Rollup does not include all non-security related hotfixes and is not subjected to the same extensive regression testing as a full service pack. Microsoft states that this update will meet customers' needs better than a whole new service pack, and will still help Windows 2000 customers secure their PCs, reduce support costs, and support existing computer hardware.
caption: SP4 installation disc
exif: {}