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GarWallis's avatar
GarWallis
Copper Contributor
Mar 29, 2021

Cross-org free/busy between one -on-prem org and another hybrid org

Hi. Could anyone advise on cross-org free/busy calendar sharing between two organisations - where one is on-premises, and the other is hybrid?  Will a user in the on-prem org be able to see free/busy information for all users in the other organisation - some on-prem, and some on-line?  Any article I can refer to?  Thank you.

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  • MDadarkar's avatar
    MDadarkar
    Brass Contributor
    Mar 30, 2021

    Hi GarWallis ,

     

    Please try these PowerShell commands,.

     

     

    Get-Mailbox YourMailbox | fl *sharing*

    Get-SharingPolicy -Identity "Default Sharing Policy"


    ******* Creates the sharing policy "PolicyName" for two different federated domains (ExternalOrg2.com and ExternalOrg1.com) with different sharing actions configured for each domain

     

    New-SharingPolicy -Name "PolicyName" -Domains 'ExternalOrg1.com: CalendarSharingFreeBusyReviewer', 'ExternalOrg2.com: CalendarSharingFreeBusyDetail' -Enabled $True

     

    *********This example modifies the sharing policy for the non-federated Anonymous domain.
    This policy allows users in the Anonymous domain to see your users' detailed calendar availability (free/busy) information. .

     

    New-SharingPolicy -Name "Non-Fed_External" -Domains 'Anonymous: CalendarSharingFreeBusyDetail' -Enabled $true

     

    *****************Set SharingPolicy on user
    Get-Mailbox -Identity "YourMailbox" | Set-Mailbox -SharingPolicy "PolicyName"

    ***************Adding a domain to an existing policy (you must include any previously included domains.)


    Set-SharingPolicy -Identity "PolicyName" -Domains 'ExternalOrg1.com: CalendarSharingFreeBusySimple', 'ExternalOrg2.com: CalendarSharingFreeBusyReviewer'


    Get-Mailbox -ResultSize unlimited | Where {$_.SharingPolicy -eq "PolicyName"} | format-table Alias,EmailAddresses

     

    *********Enable Sharing Policy
    Set-SharingPolicy -Identity "PolicyName" -Enabled $True

     

    I hope this is informative.

     

    Regards,

    MD

    • GarWallis's avatar
      GarWallis
      Copper Contributor
      Mar 29, 2021

      MDadarkar , thanks for replying.  However, your article reference doesn't address the hybrid environment.

       

      For anyone who is interested, I found this reference which does seem to understand and address the issue of Cross-org/Inter-org Calendar Free/Busy sharing - The Hybrid Mesh - Microsoft Tech Community

       

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