You may have noticed that the ManagedFolderMailboxPolicyAllowed parameter is no longer supported by Exchange 2013 CU7.
Therefore the creation of all (linked) mailboxes will fail with the error:
A parameter cannot be found that matches parameter name 'ManagedFolderMailboxPolicyAllowed'.
The Quick Connect Express for AD (Exchange Connector) relied on that parameter. A product defect has been logged (TF00432202).
This will be fixed on a future release of the product. If you require this immediately corrected, please contact support for a hotfix referencing the defect ID TF00432202.