Stop Users Adding Exchange Email Addresses

Copper Contributor

Hi All,


Is there a way to stop users in Outlook 365 from adding Exchange email addresses that are not their sign in address??

or is there a way to just block the accounts wizard?


I know we can block a range of other email address types, but I don't want people adding any other mailboxes to their work PC's.


Hopefully someone has an answer.



4 Replies
There was another topic about that: t . Does that help?
Any update?

@Harm_Veenstra ,


Thanks for that suggestion.


It partially works, it doesn't work on the new Outlook though, and we've got a few users using the new UI.


Do you know if there is a new key to stop it for Outlook(New)?


Let me know.


Thanks ! 

@Well_Connected_IT You could try this. It will lock the Outlook profile completely