Show O365 group mailbox in Outlook

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Technology › Microsoft › O365
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Depending on when and how your Office 365 Groups have been created, the group inbox might be hidden in Outlook. In their infinite wisdom, Microsoft decided that there should be no way in the GUI to change that once the groups have been created, but there is a fix for that.

PowerShell to the rescue

The property can easily be changed using PowerShell and the Exchange Online module. Simply connect to your tenant and execute the following command to show all groups and their respective configuration.

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Get-UnifiedGroup | Select-Object DisplayName, PrimarySmtpAddress, HiddenFromExchangeClientsEnabled

To show a group in Outlook, we can use the following command

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Set-UnifiedGroup -Identity SmtpAddress@contoso.com -HiddenFromExchangeClientsEnabled:$false

Or set the property to true again to hide the group.

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Set-UnifiedGroup -Identity SmtpAddress@contoso.com -HiddenFromExchangeClientsEnabled:$true

References