I've inherited a botched Exchange 2010 install. From what I know and can see the install failed and subsequently the server was wiped. It appears the AD prep went fine (I see the new Admin Group in ADSI Edit and Security Groups in AD) and JR tech says no errors reported here. No mailboxes were migrated and the stores weren't even installed yet so no public folder issues.
Before I go and reinstall the server and Exchange, would it be safe/reasonable to simply remove the new Exchange Administrative Group (FYDIBOHF23...) via ASDI edit and rerun the /prep's ? This is a 2003 to 2010 migration so First Administrative Group remains and 2003 Exchange currently is working. (Single Server Scenario)
Or should I only remove the SERVER from CN=Servers under the Admin Group in ADSI edit?