: You must have a base installation of Windows 7 x64 already running to apply this update.
It rolls up hundreds of "hotfixes" and security patches released since the OS's launch, protecting against vulnerabilities like remote code execution. : You must have a base installation of
: Fixed an issue where folders would not restore to their previous state in Windows Explorer after a reboot. : You must have a base installation of
Essential for software compatibility (most "modern" Win7 apps require SP1). : You must have a base installation of