Hi, I'm trying to install Exchange 2010 from powershell for Exchange 2003 migration. When i type command to powershell: .\Setup.com /mode:Install /roles:CA,HT,MB /EnableLegacyOutlook /LegacyRoutingServer:mail.domain.org /ExternalCASServerDomain:mail.domain.org i get error: <ht> isn't a valid command-line option. To list the available command-line parameters, type Setup /? <ht> is hubtransport role if i leave only one role (/role:CA) all going ok I suspect, that more than one role installation on the same time is not possible? But microsoft documentation says, that is possible: /roles, /role, /r Specifies which server roles to install or uninstall: /role:Mailbox /roles:Mailbox, HubTransport The following are the valid server roles: . HubTransport, HT, H . ClientAccess, CA, C . Mailbox, MB, M . UnifiedMessaging, UM, U . EdgeTransport, ET, E . ManagementTools, MT, T Any ideas how to fix this?

Because you run all those commands from Command prompt not the PowerShell To run those commands from PowerShell you will have to make a script (.ps1) so that PowerShell will understand it. Gulab | MCTS-MCITP Messaging: 2010 | MCTS-MCITP Messaging: 2007 | MCC 2011 | Skype: Gulab.Mallah