With the last update of avast 9.0.2011, every time i´m going to shutdown my PC with the window of outlook 2013 minimized in the task bar I obtain the message: This program is preventing Windows from shutting down, and always appears: Outlook 2013.
If I uninstall avast 2014, the problem is solved. Can you fix that? Don´t forget it occurs with the outlook 2013 window minimized in the task bar.