Microsoft regularly releases major updates to their Windows operating systems. Below you'll find all the latest information on these updates.
Latest Major Updates to Microsoft Windows (Windows 8):
See How to Update to Windows 8.1 for detailed instructions on applying the Windows 8.1 update. The 8.1 update is not available as a standalone download.1
Latest Microsoft Windows Service Packs (Windows 7, Vista, XP):
Please note that for most of you, the easiest way to install the latest Windows service pack or update is to run Windows Update.
|Operating System||Service Pack / Update||Size (MB)||Download|
|Windows 7||SP1 (windows6.1-KB976932-X86.exe)||537.8||32-bit|
 Beginning in Windows 8, Microsoft began releasing regular, major updates to Windows 8 in the form of Windows 8.1, Windows 8.2, etc. Service packs will not be released.
 Windows XP SP3 can only be installed if you already have Windows XP SP1a or Windows XP SP2 installed. If you do not have one or the other of those service packs installed, install SP1a, available here, before trying to install Windows XP SP3.
 Windows XP Professional is the only 64-bit version of Windows XP and the latest service pack released for the operating system is SP2.