Windows 2000 build 2195.1

This is the Official RTM build for Windows 2000, the last NT-based operating system geared solely at small business and enterprise. Five service packs were planned, however, only four were actually released. This release includes Internet Explorer 5; this can be upgraded up to IE 6. DirectX starts off at 7.0, but can be upgraded to 9.0c. It was supported up until 2010.

System Requirements
Windows 2000 has modest system requirements compared to modern Windows releases, which is one reason why it was so popular in enterprise businesses (these businesses attempt to reuse any old tech they can). The requirements are as follows:

133Mhz Pentium or better 64MB of RAM recommended minimum, 32MB absolute minimum. A maximum of 4GB is supported. At least 650MB free on a 2GB hard drive At least VGA monitor A mouse & keyboard

Features
Windows 2000 was the first NT-based release to include the Active Desktop as standard. It also incorporated many features of Windows 98 into an NT codebase, hence it's original codename "Memphis NT". It is extremely stable, due to it's NT lineage, which is another reason for it's popularity with enterprise businesses at one time. It is the last Windows operating system that did not include Windows Genuine Activation technology.

Usage
For a multitude of reasons, Windows 2000 was extremely popular with businesses for an extended period of time. Most of these businesses migrated from W2K to Windows XP or 7 soon after support ended. The main reasons for their reluctance to move from W2K were the cost of retraining, and later, the disaster that was. It was also popular with some tech-savvy consumers for awhile, largely due to the much-maligned Windows Millennium Edition.