For the last few days I have been unable to send any attachment over 1MB through either of my Outlook e-mail accounts. Outlook just freezes. The only way to get out of it is to go to Task Manager and kill Outlook. I am on Windows 8 with Outlook 2010. This is a new problem - I routinely work with files of 5MB plus and have never had this problem. I do seem to be able to receive larger files, however. Any thoughts.