In an effort to provide additional protection for customers, we are releasing an update that further enhances the security of Windows Update / Microsoft Update (WU/MU) Client.
Improvements include further hardening of infrastructure used by WU/MU client and a more secure communication channel between WU/MU Client and Service.
The update is applicable to Windows 7 Service Pack 1, Windows Server 2008 R2 Service Pack 1, Windows 8, Windows RT, Windows Server 2012 and the rollout will begin today. Similar to past updates, this update will be automatically installed if Automatic Updates is turned ON, either set to automatically install updates or notify to download/install updates.
Details on the changes to the WU/MU client can be found at KB 2887535.
As with past updates, this update will not change your current Windows Update or Automatic Updates settings. Anytime Windows Update (or Automatic Updates) is turned ON, either set to automatically install updates or notify to download/install updates, Windows Update will take care of updating itself.
It's important to keep your PC up to date with the latest updates to keep your PC running smoothly and safely.