Forum Discussion

Copper Contributor

May 23, 2018

Solved

Block users from becoming Guest in another Office 365 Tenant

Hi! Is it possible to restrict our Azure/Office 365 users from using their account/email-addresses as Guests in another Azure/Office 365 Tenant. I know that we can block which domains that we can se...

Azure AD B2B

Peter Stapf
Jun 30, 2022
This feature is in preview now.
Have a look at cross tenant access policies:

https://docs.microsoft.com/en-us/azure/active-directory/external-identities/cross-tenant-access-overview

brink668

Brass Contributor

Jan 28, 2022

4 years later I have the same question. Has anyone figured out how to block this?

tpicorps
Copper Contributor
Jun 29, 2022
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
- Peter Stapf
  Brass Contributor
  Jun 30, 2022
  This feature is in preview now.
  Have a look at cross tenant access policies:
  
  https://docs.microsoft.com/en-us/azure/active-directory/external-identities/cross-tenant-access-overview
  - StevenC365
    MVP
    Jun 30, 2022
    As Peter Stapf points out, this is now trivial to do using Cross Tenant Access Policies.