In Office Communications Server 2007 R2 console tree, the Unassigned users node contains all users that are enabled for Office Communications Server, but are not currently assigned to a valid Standard Edition server or Enterprise pool. If the server or pool that a user is assigned to is deactivated or removed from the Office Communications Server environment, the pool assignment becomes invalid and the user is added to Unassigned users. Unassigned users cannot sign in using their Communications Server account.
You can perform the following actions on any unassigned user:
Delete users. Delete user information from Office Communications Server.
Move users. Change user pool assignment.
To perform these actions on all unassigned users instead of just one user, right-click Unassigned users in the console tree.
You can delete all Office Communications Server information for an unassigned user from the Office Communications Server back-end database. Any users that you delete from Office Communications Server are not removed from Active Directory Domain Services.
You can move an unassigned user to a pool to restore the user's connectivity to Office Communications Server.
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