I have a problem when i try to install Exchange server 2003. I run dcdiag and netdiag from the command prompt. But when i try to run the forestprep an error message appears. The message says "Exchange Server 2003 has a known compatibility issue with this version of Windows. For more information, refer to http://go.microsoft.com/fwlink/?LinkId=37488". When i click continue the message appers again. Then it starts installing but it stops after showing some messages. The message says " Setup failed while installing sub-component Microsoft Exchange Organization-Level container object with error code 0xc103fca2(Please consult the installation logs for detailed description). You may cancel the installation or try the failed setup again.

1. Make sure that Dcdiag and Netdiag are clear which will confirm proper replication.2. As per the error message "Setup failed while installing sub-component Microsoft Exchange Organization-Level container object" , Check if any "Microsoft Exchange" container is created in Adsiedit or not.3. If yes, delete it and try fresh installation again.You can also follow :http://support.microsoft.com/kb/325323

Also, please run /forestprep and /domainprep on the DC directlyJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com

Please mention the OS in which you are trying to install(exchange 2003 dose not word on win 2003 64bit), please clarify.Ripu Daman Mina

Hi,Can you post the complete error message from your exchange server setup progress log?Deleting the organization from the ADSIEDIT and then trying forestprep and domainprep could help you.- Nagesh