This DVD5 ISO image file contains the security updates for Windows released on Windows Update in April 2013. The image does not contain security updates for other Microsoft products. This DVD5 ISO image is intended for administrators that need to download multiple individual language versions of each security update and that do not use an automated solution such as Windows Server Update Services (WSUS). You can use this ISO image to download multiple updates in all languages at the same time.
Important: Be sure to check the individual security bulletins at http://www.microsoft.com/technet/security prior to deployment of these updates to ensure that the files have not been updated at a later date.

The below Operating Systems will contain the following number of languages unless otherwise noted:

Windows XP - 24 languages
Windows XP x64 Edition - 2 languages
Windows Server 2003 - 18 languages
Windows Server 2003 x64 Edition - 11 languages
Windows Server 2003 for Itanium-based Systems - 4 languages
Windows Vista - 36 languages
Windows Vista for x64-based Systems - 36 languages
Windows Server 2008 - 19 languages
Windows Server 2008 x64 Edition - 19 languages
Windows Server 2008 for Itanium-based Systems - 4 languages
Windows Server 2008 R2 x64 Edition - 19 languages
Windows Server 2008 R2 for Itanium-based Systems - 4 languages
Windows 7 - 36 languages
Windows 7 for x64-based Systems - 36 languages