Manage guest access in Microsoft 365 groups

By default, guest access for Microsoft 365 groups is turned on for your organization. Admins can control whether to allow guest access to groups for their whole organization or for individual groups.

When it's turned on, group members can invite guest users to a Microsoft 365 group through Outlook on Web. Invitations are sent to the group owner for approval.

Once approved, the guest user is added to the directory and the group.

Guest access in groups is often used as part of a broader scenario that includes SharePoint or Teams. These services have their own guest sharing settings.

Manage groups guest access

If you want to enable or disable guest access in groups, you can do so in the Microsoft 365 admin center.

1. In the admin center, go to Show all > Settings > Org settings and on the Services tab, select Microsoft 365 groups.

2. On the Microsoft 365 Groups page, choose whether you want to let people outside your organization access group resources or let group owners add people outside your organization to groups.

Add guests to a Microsoft 365 group from the admin center

If the guest already exists in your directory, you can add them to your groups from the Microsoft 365 admin center.

1. In the admin center, go to the Groups > Groups page.

2. Click the group you want to add the guest to, and select View all and manage members on the Members tab.

3. Select Add members, and choose the name of the guest you want to add.

4. Select Save.