【As a result of some misconfiguration, some software components may not be properly updated in a few machines. Would you confirm that you can go to the site http://windowsupdate.microsoft.com/ and that site is able to properly detect and offer updates to your system? You don't need to perform any given update (although that is certainly good, mainly for critical ones) but just to verify if the components to detect the need for updates are "up-to-date" (I know this may sound ironic).】