I have personally been encountering an issue for the last few months on both IE 9, IE 10, and IE11 in all of my dev and workstations. The problem: my Internet Explorer simply crashes when I mouse over a user in Office365. The browser refreshes and everything’s back to normal (unless I’m typing a newsfeed or such) in which case I simply lose what I typed. Finally, to resolve the issue I poked around IE’s add-ons and disabled the NameCRTL add-on.
Disable the NameCRTL add-on which will remove presence information and the bug.
Ulysses Ludwig is a SharePoint architect with over 16 years in the IT and computer industry. Ulysses' primary focus is SharePoint but he dabbles in the latest web technologies and likes to develop software in his spare time.