Can you provide more details, like what Error Messages you receive? Maybe also provide a snippet of how you are trying to read from Outlook. Or even a screenshot of your environment right before it errors or gets stuck.
My initial thinking was that when you open Outlook which is required for Read Outlook activities, there might be some setting on the Production environment that is causing a popup to show up when Outlook opens, like telling you that a script is trying to access Outlook or something like that; you would also be able to tell this if you watch the process run from Studio, and this might be something you will need to work with your local IT for a settings fix or create automation to get around the popup.
Although, I’m just guessing without actually seeing it run on your environment.