I'm not able to see Exchange tabs in in ADUC mmc, regardless of whether it's @ DC or exchange servers. Any help on that ? In the web, it's due to exchange manager is not installed in DC. But i'm not able to see it even I execute ADUC in my exchange server. Below is the summary that i'm not able to see: 1) Exchange tab 2) Storage group 3) First routing group is red in color Could it due to I've performed a domainprep before forestprep has completed? Yup, i admit it's my fault. Any resolution? Probably, i'll give your on my installation: 1) Exchange is installed on top of clustering. 2) Phyiscal disk and exchange virtual server are configured. 3) SA is not installed due to SAN is not ready for this installation.

Not exactly sure what would have caused this, and also not sure how you managed to run DomainPrep whilst ForestPrep was still running. Did you do it on separate boxes? Is Exchange working at all? Did the Install complete fully? I suggest re-running ForestPrep and DomainPrep and let replication occur. Then re-installing the admin tools on the Exchange server. See if that makes any difference. Cheers Nathan