A change recently occurred where users of 365 can no longer select 'View in Dynamics 365' and open in your default browser.
If you users store lots of link to various programs in the Dynamics 365 profile so they can easily access these different account with the passwords stored in Chromed and MFA tokens etc this is certainly just creating an annoyance and must have only been done to try and force your users to not use Google Chrome and there preferred browser.
Please revert to using the computers default browser if Edge gets good enough people will choose this as there default browser.
Continue to allow the choose please. . .