External Users in Teams

[Deleted]

I added an external "guest" to one of our Teams sites.  They are able to access with no problems.. My question is, with external sharing enabled, can this user be restricted to only the one team site I added them to? Does something prevent a team owner from adding that same external guest to another site within our tenant?

[#2 · Accepted solution]

By default they can be added to any Team. You can however configure restrictions on the Team/Group level, so that only certain Teams/Groups can have Guests added to them. Check the documentation here: https://docs.microsoft.com/en-us/microsoftteams/teams-dependencies

And here for how to block Guests for particular Group: https://support.office.com/en-us/article/guest-access-in-office-365-groups-bfc7a840-868f-4fd6-a390-f...

[#3]

So if I understand correctly, if I have 300 Team sites and I have external sharing enabled and I want to block it from say 299 of those Teams.. I would have to run a powershell script on each team site?

[#4]

Not necessarily, if you only want to enable Guests for 1 Team/Group, you should be able to do it the other way around. Meaning set the "global" template to disallow Guest, but configure specific Groups to allow. Still have to do it via PowerShell though :)