Exchange 2010 Mailbox role – installation failed

Error

Microsoft.Exchange.Management.Deployment.UpdateRmsSharedIdentity.Link()

This error occurs because the federated built-in e-mail account that links to the computer account no longer exists. Or, the federated built-in e-mail account in the Active Directory directory service is corrupted.

Resolution..go to Active Directory server

1. Click Start, click Run, type adsiedit.msc, and then click OK.
2. Locate the Default Naming Context node, and then locate to the CN=Users container.
3. Locate and then right-click the CN=FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042 container. Then, click Delete.

Rerun the Exchange Server 2010 Mailbox role setup application.

Create a new federated e-mail account by using the following command: (No change in the below command…just type as it is)

New-Mailbox -Arbitration -Name FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042 -UserPrincipalName FederatedEmail.4c1f4d8b-8179-4148-93bf-00a95fa1e042@<Default_Accepted_Domain>

Useful link : http://support.microsoft.com/kb/978776