Disable external sharing on all O365 Groups, with one single exception?
I have a customer that is using Office365 groups to collaborate, mostly for file sharing. Overall they don't want to allow any external sharing via their O365 groups, except for one specific group which is going to be used to share certain files with external partners. Can i disable external users/guests on all existing and future O365 groups, but leave one group where it is still enabled?