Windows Operating System Versions

This book covers the most recent version of the Microsoft Windows client and server operating systems: Windows 7 (32-bit and 64-bit versions) and Windows Server 2008 R2 (64-bit version only). Unless specifically stated, the text applies to all versions. As background information, Table 1-1 lists the Windows product names, their internal version number, and their release date.

Table 1-1. Windows Operating System Releases

Product Name

Internal Version Number

Release Date

Windows NT 3.1

3.1

July 1993

Windows NT 3.5

3.5

September 1994

Windows NT 3.51

3.51

May 1995

Windows NT 4.0

4.0

July 1996

Windows 2000

5.0

December 1999

Windows XP

5.1

August 2001

Windows Server 2003

5.2

March 2003

Windows Vista

6.0 (Build 6000)

January 2007

Windows ...

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