I try to install 2nd exchange to replace the existing one. the current server is windows 2003 standard with exchange 2003 enterprise. When I try to install the second exchange to migrate off the user, install failed and I got error 0x80005000. I follow the instruction to add addition server. DCdiag, netdiag pass OK. I add new server as AD member. I check public folder and seem OK. I can't find solution anywhere on google.