When I try to create or edit a rollup from Teams Dataverse a browser window opens for the editor, but fails to authenticate and returns me to a login screen, authenticating then just keeps looping back to the same point.
I've tried multiple machines, multiple tenants, using Teams from the browser and desktop client, always the same. Could someone else verify if this is the case for them also?
Create a relationship between two tables, then add a date field and make it a rollup. Beware that it's opening a browser so make sure that will be the same login as you are using in Teams.