Fix for "You must close all dialog boxes before you can close Exchange Management Console" in Exchange 2010
I've been covering this issue for a very long time here . With Internet Explorer 9 installed on a computer with the Exchange 2010 management tools, you cannot close the Exchange Management Console. When you try to close it, you get the following message
Read More...
Read the complete post at http://www.expta.com/2011/10/fix-for-you-must-close-all-dialog-boxes.html