For a long while this extension worked very well. Since the January 2018 update, however, it has exhibited major flaws, the most annoying of which are 1) Nearly constant need to re-login to the service, and 2) Poor interaction with Microsoft Office online, including but not limited to completely breaking Outlook's ability to load an email message in a separate window. In fact, I have been obliged to disable it for this very reason. A great tool when it works right, but it isn't currently working right.