I'm trying to follow the instructions in Microsoft article but it's not working. http://technet.microsoft.com/en-us/library/bb201749(EXCHG.80).aspx It says to disable the mailbox and reconnect but when I run the command: Connect-Mailbox -Identity "<MailboxIDParameter>" -Database "<DatabaseIdParameter>" -Room "<UserIdParameter>" Connect-Mailbox -Identity "<RR Corp Boardroom>" -Database "pobox\SG5\SG5" -Room "RR-CONF-BOARDROOM@us.photomask.com" I get an error: Connect-Mailbox : A positional parameter cannot be found that accepts argument 'RR-CONF-BOARDROOM@u s.photomask.com'. At line:1 char:16 + Connect-Mailbox <<<< -Identity "<RR Corp Boardroom>" -Database "pobox\SG5\SG5" -Room "RR-CONF-BO ARDROOM@us.photomask.com" + CategoryInfo : InvalidArgument: (:) [Connect-Mailbox], ParameterBindingException + FullyQualifiedErrorId : PositionalParameterNotFound,Microsoft.Exchange.Management.MapiTasks. ConnectMailbox I have no idea what I'm doing wrong. Is the "<UserIdParameter>" supposed to be the alias or username? Neither work for me.

This worked to get the mailbox as a user mailbox. Connect-Mailbox -Identity "<RR Corp Boardroom>" -Database "pobox\SG5\SG5" Then I was able to convert to room. I'm still wondering what I did wrong.