before entering that line you need to put in: import-module servermanager This imports the cmdlets required.

dear all , im new to Exchange Server 1- i install windows server 2008R2 , and i install active dirctory and dns server on it the name of the domain is syamand.com 2-i install another server 2008 R2 , the name of this serer is EX2k10 ....and i add it to the domain syamand.com 3- now im trying to do the prerequisites to the EX2k10 server when im trying to install roles and feature from power sell using code for example this code Add-WindowsFeature NET-Framework,RSAT-ADDS,Web-Server,Web-Basic-Auth,Web-Windows-Auth,Web-Metabase,Web-Net-Ext,Web-Lgcy-Mgmt-Console,WAS-Process-Model,RSAT-Web-Server,Web-ISAPI-Ext,Web-Digest-Auth,Web-Dyn-Compression,NET-HTTP-Activation,RPC-Over-HTTP-Proxy -Restart it gives this error message : the term ' add-windowsfeature' is not recognized as the name of a cdmlet , function, scipt file or .... what i did wrong please help me ... Regards Syamand

thanks for your quick reply i did that but still same problem

did you run powershell as administrator?

thank you very much , i think the wrong was that i didn't run it as administrator ... now a yellow text appear ... collecting data ! thanks for your help again :)

i have another problem .. after i did the prerequisites steps and tried to install the exchange server from dvd , i did custom installation but now have another problem Error: Active Directory does not exist or cannot be contaced you much be a member of the 'onranizatin managment ' role group or ' entrpise admins ' group to continue . what i could be the problem ... i only joined my exchange server computer to the Document control server ... Regards