Posted by Stefan Kanthak on Nov 26

Hi @ll,

after opting in to Microsoft Update additional (optional) software
like Silverlight or Microsoft Security Essentials is offered when
a user performs a “custom search” for updates.

Initially the current versions of this additional software are
offered as “optional updates” for download and installation.
For Silverlight cf. <https://support.microsoft.com/kb/2977218>

If the user but does not want to install this…