I saw this problem by another user and the discussion was closed. Why? It's still an issue. The user wrote last November these exact words and it's been happening to me as well for the past year. I've called support and they have no solution. "The Downloading & Installing updates process stalls at Optimizing and executing files. A close and restart seems to bypass this problem. BUT ITS NOT RIGHT! USERS AND NOT EVER CERTAIN THEIR UPDATES ARE PROPERLY INSTALLED."