KB ID 0000603 Dtd 15/05/12
Seen On Exchange 2010 (SP1), when trying to add a user to a distribution group.
Add-DistributionGroupMember Failed Error: You don’t have sufficient permissions. This operation can only be performed by a manager of the group.
1. There a few reasons for this error, I’m assuming that there is no user set as the manager for this group? (Properties > Group Information > Managed By). In my case it’s a known bug in Exchange 2010 with SP1.
Related Articles, References, Credits, or External Links