Exchange Online does not support Guest users. To share availability with external users, you need to configure either a sharing policy (for individual sharing) or org relationship (broader, tenant-wide sharing). Details are here: https://learn.microsoft.com/en-us/exchange/sharing/sharing
Let guests to see room availability and to book a room
IMK
581
Reputation points
Hi
We have added meeting rooms as room resource in M365 Admin Portal.
What are my options to let external guest persons to see a room availability (free/busy) and to let these external guests to book a room?
These people belong in another M365 tenant and because this is a temporary situation, we would like to keep this as simple as possible.
Exchange Online
Exchange Online
A Microsoft email and calendaring hosted service.
6,198 questions
Accepted answer
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Vasil Michev 119.9K Reputation points MVP Volunteer Moderator
2024-04-24T15:31:39.27+00:00