I'm facing a challenge with calendar availability for external guests. Our private equity team is looking to access the calendar availability of our leadership team to make scheduling easier. Here's what I've done so far to try to resolve it:
1. Set up a B2B connection to their domain with default settings.
2. Invited their two analysts as 'members' in our Entra tenant instead of 'guests'.
3. Created a security group that includes the analysts and the users whose calendars they need to access, and established an organization relationship for calendar sharing.
4. Used the Exchange Online PowerShell module to grant explicit availability access to the guest users for the calendars of the relevant individuals.
However, none of these steps have worked; the guests' attempts to schedule meetings show the calendars as completely unavailable. Is this achievable? Am I overcomplicating things in my approach?
1 Answer
You might want to check the settings for sharing calendars with users outside your organization. Microsoft has some guidelines on this that could help. It's crucial to ensure that your organization’s settings support these external sharing features, but ideally, you'd want a centralized way to grant access rather than having each user manage it.

Exactly! If the settings are right but it's still not working, it could be an issue with permissions or how members are added to the security group. Just a thought!