Cannot open SharePoint document in Word for Mac (stuck on ADFS authentication)

Hi Damien_Rosario 

Thanks for you response. Eliminating the popup blocker (in the browser) worked for a day, and then suddenly had no effect. And then a few days later I re-tested and ADFS authentication starting behaving properly again in Word for Mac, regardless of the state of the popup blocker!  I just tested again after a week has passed and it's still working properly, with or without popup blocker enabled. I have no idea what has changed. I don't think my network admin has changed anything on his end. I will follow up with him just to make sure.