Decommissioned or re-imaged machines can end up in the Deleted Computers container in the SEE Management Console. The list of computer names can add up and these machines cannot be removed from within the Symantec Endpoint Encryption Management Console.
No option to remove computer names from the "Deleted Computers" is available from the Symantec Endpoint Encryption Management Console.
Windows Server 2008/Windows Server 2008 R2.
Symantec Endpoint Encryption v11.