Forum Discussion
Block users from becoming Guest in another Office 365 Tenant
This feature is in preview now.
Have a look at cross tenant access policies:
4 years later I have the same question. Has anyone figured out how to block this?
Please upvote this recommendation. This feature is still not available after all these years... Uservoice was taken away so it probably lost all its traction.
https://feedbackportal.microsoft.com/feedback/idea/784eb507-eef7-ec11-a81b-000d3a03dba2
This feature is in preview now.
Have a look at cross tenant access policies:
As Peter Stapf points out, this is now trivial to do using Cross Tenant Access Policies.
Interesting, thanks for the info... Microsoft support told me this was not possible in any way just two days ago. Has anyone deployed this - will it even prevent the guest invitations from being sent in the first place? The issue we are having is that there is someone sending Teams guest invites to one of our users with malicious content, and the user is getting spammed with emails and Teams notifications every time one comes through.
