I received this optional update on 9/8...I believe. I didn't install it because it said optional. Today I checked my HP Support system for any new updates and have the critical/important updates for internet security and Microsoft updates. I decided to first investigate KB2984006 and hit 'more information' to get the details. In the article Microsoft recommends installing this update......so I guess it is important. Well, I have run into a problem. It has a prerequisite to first install 2919355 update April 2014. I checked by installed updates to see if I already have it installed. It is installed on my laptop, date installed 3/18/2014, not an April date. I checked Microsoft website and couldn't find this listed to update with an April date or listed at all. I'm confused and bewildered. I don't know what to do. I need one of the many experts on this site for help. This senior citizen is wiped out.