I used to like Trend Micro also. In fact Trend Micro and Panda used to be my two favorite antivirus programs. But it seems to me that Trend Micro has been going downhill.
A major consumer magazine that I will not name (they don't like to see their name used) used to recommend Trend Micro as the top performing antivirus program. In their most recent evaluation of antivirus programs they rated Trend Micro number four. They do their own research and also make use of companies to help them in their research.
I once seemed to have a problem myself after I downloaded an update from Trend Micro.
And a major computer magazine evaluated antivirus programs a while back (I can't remember at this time which magazine it was) and said that they had serious problems trying to install Trend Micro Internet Security. After they finally got it installed it ran well.
In my opinion there seems to be something wrong taking place with Trend Micro. At this time I would avoid it.
I think there are better commercial antivirus programs like BitDefender, F-SEcure, NOD32, and Kaspersky.