Microsoft 365 group doesn't appear in Outlook or Outlook on the web

Symptoms

A member of a Microsoft 365 group reports any of the following symptoms in Microsoft Outlook or Outlook on the web:

• The group isn't listed under the Groups folder.
• The group isn't listed on the Groups Home page.
• The group Calendar is missing.

The issue applies to:

• Microsoft 365 groups that users create
• Microsoft 365 groups that are associated with Microsoft Teams

Resolution

To fix the issue, verify the following settings:

• Make sure that the user is a member of the Microsoft 365 group:

  1. In the Exchange admin center (EAC), select Groups, and then select the group name to open a pane that shows group details.

  2. In the pane, check the Members tab to see whether the user is listed. If the user isn't listed, add the user as a group member.

  Note

  To view a group in Outlook or Outlook on the web, users must be mailbox-enabled and in the same tenant as the group. External (guest) users don't meet that criteria. For information about how guests can interact with Microsoft 365 groups, see Use Groups in Outlook as a guest.

• Make sure that the Microsoft 365 group isn't hidden from Outlook clients and the global address list (GAL):

  1. Run the following cmdlet in Exchange Online PowerShell to get the value of the HiddenFromExchangeClientsEnabled parameter:

     Get-UnifiedGroup -Identity <group name> | FL HiddenFromExchangeClientsEnabled
     

  2. If the value of the HiddenFromExchangeClientsEnabled parameter is True, run the following PowerShell cmdlet to unhide the group:

     Set-UnifiedGroup -Identity <group name> -HiddenFromExchangeClientsEnabled:$false
     

• For classic Outlook, make sure that the user's Outlook profile is set to Cached Exchange Mode instead of Online mode.

The user should now be able to access the group and its calendar in both Outlook and Outlook on the web.