Hello, We have the Exchange 2003 SP1 EMC installed on a few IT Admins PC's, this was done months ago. We now need to install it on a couple more but can't and get this error: Summary: 2 item(s). 2 succeeded, 0 failed. Elapsed time: 00:00:29 Management Tools Prerequisites Completed Elapsed Time: 00:00:23 Organization Prerequisites Completed Elapsed Time: 00:00:05 Summary: 3 item(s). 0 succeeded, 1 failed. Elapsed time: 00:00:19 Organization Preparation Failed Error: The parameter is incorrect. Parameter name: sidType/domainSid Warning: An unexpected error has occurred and debug information is being generated: The parameter is incorrect. Parameter name: sidType/domainSid Elapsed Time: 00:00:19 Copy Exchange Files Cancelled Management Tools Cancelled What is wrong?

There are certain prerequisites for the same. please make sure you have followed them Managing Exchange Server 2007 using a Windows XP workstation http://www.msexchange.org/articles_tutorials/exchange-server-2007/management-administration/managing-exchange-server-2007-using-windows-xp-workstation.htmlVinod |CCNA|MCSE 2003 +Messaging|MCTS|ITIL V3|

Before posting I actually used http://www.msexchange.org/articles_tutorials/exchange-server-2007/management-administration/managing-exchange-server-2007-using-windows-xp-workstation.html I should of said, plus I have installed it before many times. This concerns me: Organization Preparation Failed Error: The parameter is incorrect. Parameter name: sidType/domainSid

Hi, Are you trying to install EMC on the Windows XP client? If so, I suggest you run the setup on a Windows Server 2003 or Windows Vista machine first. Then please try to install it on Windows XP again. If the issue persists, please disjoin and rejoin domain, and then test the issue. Thanks, Elvis

Well I've tried it on 4 Domain XP PC's and it does the same thing, I will try on a server.

Have you tried the suggestions above? Any update on the issue?