I am upgraded a Windows server 2003 domain, and exchange 2007 box to small business server 2008. I started by running adprep /forestprep and /domainprep from the 2008 cd on the 2003 DC. Shortly after that users noticed they couldn't log into their emails. Outlook just keep giving a credentials prompt and nothing would work. They can't log into owa either. Also a shared drive is inaccessible with their domain credentials. But they can still log into the workstations. The only backup we have is from august which is of no help. I NEED HELP! one funny thing is the Admin account i used during this process is the only one that still functions normally?!?
Please help, need urgent response