Microsoft has released Windows Vista Service Pack 2 along with Windows Server 2008 SP2. Windows Vista Sp2 is available for public download on Microsoft download center as a standalone installer & as an ISO.
Download Windows Vista Sp2 x86 Standalone Installer
Download Windows Vista Sp2 x64 Standalone Installer
You must have installed Vista Service Pack 1 before installing SP2.The size of Vista sp2 installer Windows6.0-KB948465-X86.exe is around 350 MB which includes all components.
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