Forum Discussion
heinzelrumpel
Nov 18, 2025Brass Contributor
Multitenant collaboration with existing guest users
Hi,
we plan to set up Multitenant collaboration with a few tenants. Regarding this project I got 2 quesstions:
1.) what happens with users from one MTO who is already present as a guest users in one or multiple MTOs? Will that Guest User be merged with the new member status?
2.) Are newly added users from other MTOs treated with the Conditional Access policies from the MTO they are accessing? We have a conditional access polic yin place which forces B2b usre sto re-authenticate every 9 hours. Will the member user from an MTO aplly this policy?
1 Reply
- Existing guest accounts are not merged into member accounts when you enable Multitenant Organization (MTO). Instead, cross-tenant synchronization creates a new “member-like” representation of the user in the target tenant.
- Yes, users accessing resources in another tenant are subject to that tenant Conditional Access policies, even if they are members of a different MTO. Your 9 hours reauthentication policy will apply when they sign in to your tenant’s resources.