Allow only Outlook desktop app to exchange online

Occasional Contributor

Hi all,

We our looking for ways to get more control for accessing Exchange online from a BYOD device.

No user can connect from Windows and MacOS with any type of client.


Is it possible with MCAS to block all other mail desktop clients and only allow Outlook desktop?
Can this be done with MCAS? or do I need another Microsoft 365 solution?


Thanks for the help and information
kind regard's





1 Reply
I like your pure approach Finn, however has this been validated and agreed by the various Business Units and Stakeholders as something that is agreed that needs to be accomplished?

Use Conditional Access to restrict access to *ONLY* these Apps:

Hope that helps