Enable Free/Busy information between the Office 365 users from two different tenants, when the Autodiscover of one of them is pointing On-Premise

Use this when you and your friendly companies both on Office 365 want to share free/busy information for better meeting scheduling. PowerShell method at the bottom.

On the cool tenant

From the Office 365 admin center dashboard, go to Admin > Exchange.
Go to Organization > Sharing.
Under Organization Sharing, click New .
In New organization relationship, in the Relationship name box, type a friendly name for the organization relationship as “Cool Guys to Other Guys
In the Domains to share with box, type the domain for the external Office 365 or Exchange on-premises organization as xcr.jp(if there are additional domains in the org they will automatically populate).
Select the Enable calendar free/busy information sharing check box to turn on calendar sharing with the domains. Set the sharing level for calendar free/busy information and set which users can share calendar free/busy information.
To set the free/busy access level, select one of the following:

-Calendar free/busy information with time only.
-Calendar free/busy with time, subject, and location.


Click save to create the organization relationship.
Once the setup is completed, Organization relationship should show up the following information auto populated into it.
Also make sure that all the federated domains are well populated into the Organization relationship.

On the Other Guys tenant:

From the Office 365 admin center dashboard, go to Admin > Exchange.
Go to organization > sharing.
Under Organization Sharing, click New .
In new organization relationship, in the Relationship name box, type a friendly name for the organization relationship as “Other Guys to Cool Guys
In the Domains to share with box, type the domain for the external Office 365 or Exchange on-premises organization as windrammer.net(if there are additional domains in the org they will automatically populate)
Select the Enable calendar free/busy information sharing check box to turn on calendar sharing with the domains. Set the sharing level for calendar free/busy information and set which users can share calendar free/busy information.
To set the free/busy access level, select one of the following:

Calendar free/busy information with time only.
Calendar free/busy with time, subject, and location.
Click save to create the organization relationship.
Once the setup is completed, Organization relationship should show up the following information auto populated into it.
Also make sure that all the federated domains are well populated into the Organization relationship.

OR POWERSHELL!!!!

From the Cool Guys tenant
New-OrganizationRelationship -Name “Other Guys to Cool Guys” -DomainNames “xcr..jp” -FreeBusyAccessEnabled $true -FreeBusyAccessLevel LimitedDetails

From the Other Guys tenant
New-OrganizationRelationship -Name “Cool Guys to Other Guys” -DomainNames “windrammer.net” -FreeBusyAccessEnabled $true -FreeBusyAccessLevel LimitedDetails

Leave a comment

Your email address will not be published. Required fields are marked *