Installing Exchange Pre-requisites // An error occurred. The error code was 3221684226. The message was The system cannot find the file specified.

After wiping my server and trying to install Exchange 2007 again I ran into this problem when preparing the topology again:

"An error occurred. The error code was 3221684226. The message was The system cannot find the file specified."

After doing some research this is due to the fact that I don't have the AD tools intalled on my server. I found a helpful resource from microsoft about the pre-requisites for exchange 2007 you need to install before you can move forward with your installation. Here is the link: http://technet.microsoft.com/en-us/library/bb691354.aspx For convinience I am including all the command lines to have all the pre-reqs for all the recommended functions (Client Access, Mailbox and HubTransport)

For AD Tools:

1. ServerManagerCmd -i RSAT-ADDS

 To install the Windows Server 2008 operating system prerequisites for a computer that will host the Hub Transport, Client Access, and Mailbox server roles

 To install the Windows Server 2008 operating system prerequisites for the Exchange management tools

1. Open a Command Prompt window.

2. Install Windows PowerShell, which is included in Windows Server 2008 (but not installed by default) by running the following command:

   ServerManagerCmd -i PowerShell

3. Install the necessary IIS prerequisites by running the following commands in the order in which they are listed:

   ServerManagerCmd -i Web-Metabase
   ServerManagerCmd -i Web-Lgcy-Mgmt-Console