I recently had to change my Rogers Yahoo email password, because the Outlook app on my mobile asked me to after it updated. It took a couple of tries, but now I can access my Rogers email on my mobiles. However, my connection via Outlook 2016 stopped working. Even entering the new password still brings up Authentication Failed. I even deleted the account and re-entered all IMAP information in. And still getting Authentication Failed message. Login info is CORRECT. Works on browsers, works on mobile app. It just doesn't work on desktop app on both my Macs running 10.11. Was working perfectly fine before the mobile update password issue. Which seems to happen quite often whenever the mobile app updates. In fact, whenever the mobile app updates, I'm certain 90% of the time, it will ask me to re-enter passwords (has happened on multiple email accounts). But this is another issue all together. Which sadly has affected my desktop app. How do I fix the issue for the Mac OS DESKTOP Outlook 2016 app?