I am setting Exchange 2007. We are migrating from Exchange 2003. Everything else installed but the Hub Trans. Any ideas? Exchange Server component Hub Transport Role failed. Error: Error:The task cannot locate the certificate to produce the subscription file. Check the local machine certificate store to ensure a certificate is configured for this server.

It ended up being an issue witht he old exchange server 2003. It was totally out of free space. After i freed up a few gigs of space and restarted the DNS and Exchange 2003 servers the install went just fine.