Hi Dunk
Please find my answer below
1. Which plan are you using?
I'm not sure since this is cooporate account
2. Does this issue only happen on Outlook and Excel?
Outlook, excel and words
3. If you click ‘remind me later’ and ‘continue’, you can use these applications normally and the dialog box will never pop up again, right?
As long as I don't reboot, it won't pop up again, email can be received, sent (although it keeps disconnect and reconnect), and xls or doc file can be save as usual
4. Do you try using other accounts to test the issue?
No, since I don't have others account to be tested. For information, this case doesn't occurs in my windows laptop, only happened on my mac (yosemite)
5. When does the error message pop out, once you open the application?
Usually it pop out when I first turn on or restart my mac (and outlook is set to automatically on), not everytime, but very frequent.
If I close the office app, and re-open it, the error message will not pop out again
Thx