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Kazzan's avatar
Kazzan
MVP
Sep 21, 2017
Solved

Bulk adding to Office 365 Groups with PowerShell

Hello, one of my customer actually trying to onboard every user in the organization to one Yammer Group which is linked to Office 365 Groups. We manage to automate onboarding for new users. But how t...
office 365
Office 365 Groups
  • TonyRedmond's avatar
    TonyRedmond
    Sep 22, 2017

    I just did this:

     

    [PS] C:\> $Users = (Get-Recipient -RecipientPreviewFilter {RecipientTypeDetails -eq "UserMailbox" -and CustomAttribute3 -ne "N"}

    [PS] C:\> Add-UnifiedGroupLinks -Identity O365Group -LinkTypeMembers -Links $Users.Name

     

    This creates an array of all user mailboxes in the tenant that are not marked with a value in one of the customized attributes. I then use the array as input to Add-UnifiedGroupLinks, which added all (30) the users to the group.

     

    I forgot that I had this example in Chapter 15 of the Office 365 for IT Pros ebook...  PowerShell is great!

jcgonzalezmartin's avatar
jcgonzalezmartin
MVP
Sep 21, 2017
That's not correct, AFAIK the number of members of a single Group is 2500
TonyRedmond's avatar
TonyRedmond
MVP
Sep 22, 2017

Hmmm... I think the official documented limit is still 1,000 (the same for Teams). Some work is ongoing to increase the limit. From a technical perspective, the issue is how many simultaneous connections can be supported by the group mailbox. This is clearly very important for Groups that use Exchange to store conversations, but not for groups that use Yammer. 

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