I recently set up the outlook tool in designer. Was able to run the flow on server right after but once I put it on schedule run for the next day it keep failing due to authentication. I'm using the "Provide client ID, client secret and tenant ID" to create a connection. On top of that I also added the Alteryx registry key edit in vain. Any support or pointers I can get to resolve this issue would be much appreciated.
There's a whole world of possibilities here. But, I would first start by trying to upload a fresh copy for the scheduler instead of using what you ran once.
Else you may need to check with your Outlook admin and see if it got blocked.
