How to obtain versions of Internet Information Server (IIS)

Applies to: Internet Information Services 8.0Internet Information Services 8.0 Express

We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 7.0 running on Microsoft Windows Server 2008. IIS 7.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:For more information about IIS 7.0, visit the following Microsoft Web site:


This article contains a table of all versions of IIS, and how they can be obtained. Additionally, you can download and then run the PowerShell script to obtain the IIS version on your computer.

More Information

VersionObtained fromOperating System
1.0Included with Windows NT 3.51 SP 3 (or as a self-contained download). Windows NT Server 3.51
2.0Included with Windows NT Server 4.0.Windows NT Server 4.0
3.0Included with Windows NT Server 4.0 Service Pack 3 (Internet Information Server 2.0 is automatically upgraded to Internet Information Server 3.0 during the install of SP3).Windows NT Server 4.0
4.0Self-contained download from or the Windows NT Option Pack compact disc.Windows NT Server 4.0 SP3 and Microsoft Internet Explorer 4.01
5.0Built-in component of Windows 2000. Windows 2000
5.1Built-in component of Windows XP Professional.Windows XP Professional
6.0Built-in component of Windows Server 2003.WIndows Server 2003
7.0Built-in component of Windows Vista and Windows Server 2008.Windows Vista and WIndows Server 2008
7.5Built-in component of Windows 7 and Windows Server 2008 R2.Windows 7 and Windows Server 2008 R2
8.0Built-in component of Windows 8 and Windows Server 2012.Windows 8 and Windows Server 2012