Consider the following scenario:

  • You have two domains (domain A and domain B) in a Microsoft Exchange Server 2010 environment.

  • You deploy an Exchange Server 2010 Mailbox server in domain A, and then you create a user account in domain B.

  • You try to grant the user permissions to a mailbox in domain A. To do this, you run the Add-ADPermission cmdlet and specify a global catalog server that is in domain B as the domain controller.

In this scenario, the cmdlet fails, and you receive the following error message:

User wasn't found. Please make sure you've typed it correctly.
+ CategoryInfo : InvalidArgument: (:) [Add-ADPermission], ManagementObjectNotFoundException
+ FullyQualifiedErrorId : Error ID,Microsoft.Exchange.Management.RecipientTasks.AddADPermission


This issue occurs because the Exchange server does not use the specified global catalog server when an Active Directory session is created after the role-based access control (RBAC) scope verification process is complete.


To resolve this issue, install the following update rollup:

2706690 Description of Update Rollup 4 for Exchange Server 2010 Service Pack 2


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about the Enable-Mailbox cmdlet, go to the following Microsoft website:

General information about the Enable-Mailbox cmdletFor more information about the Add-ADPermission cmdlet, go to the following Microsoft website:

General information about the Add-ADPermission cmdlet

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