Windows Update re-offers KB 2566220 and KB 2532531 after I’ve already installed it. If you have installed Windows Update 2566220/2532531 but you will notice that it is getting in the list of available updates in Windows or Microsoft Update. How to resolve this issue?
This problem normally occurs when you have installed KB 2566220 and KB 2532531 manually. Yes, After you install this security update, you may be prompted to install the security update again when you scan the system by using Windows Update or Microsoft Update.
This issue may occur if you installed this security update, but you have not installed update 2552343. To resolve this issue, install update KB2552343 using Windows Update or Microsoft Update using the below steps.
Use your Start menu to check for updates and also, Windows Update is included in Control Panel.
In the future, to check for updates or if you cannot open Windows Update automatically, Click the Start button, click All Programs, and then click Windows Update.