The owner of a security group can't view or manage a mail-enabled security group by using the Exchange admin center in Office 365 if the group is hidden from the global address list (GAL). However, a global admin can view the security group in the Exchange admin center. This occurs even though the owner is listed in the ManagedBy attribute of the group.
The owner of a distribution group can't manage the group if it is hidden from the GAL.
This behavior is by design.
- Owners of security groups can't manage a group in the Exchange admin center if the group is hidden from the GAL.
- The distribution group has to be unhidden from GAL for owners to manage in OWA.
To work around this behavior, follow these steps:
- Create a role group, and then assign the Distribution Group role to that role group. For more information about how to create role groups, see Manage Role Groups.
- Add to the role group the users who have to manage groups that are hidden from the GAL. For more information about how to add or remove role group members, see Manage Role Groups.