Environment: Office 365 Business Premium on standalone Windows 10 Pro desktops
We just started getting this pop-up when opening Office apps:

I am "my organization's admin" and I'm not aware that I have given this choice. And I cannot find the setting in the Admin panel. How can I disable "optional connected experiences" for the whole tenant? We work on many different locations and I don't want
to go on the road for a week to do this on all desktops.
If this has been announced in the Admin panel Message Center, I must have missed it. My users, including the management, are worried about it. We work with sensitive information from customers and partners. We stay away from data-surveillance services like
Google, Bing, Facebook and Linked-in and we want to minimize telemetry.