Hello,
I don't see much information about this error on the internet. Only one in Technet and it is related to Exchange 2010 and besides the question is unsolved.
I am trying to install Exchange 2007 SP3 over Windows 2008 R2 Enterprise.
It goes all fine until the Hub Transport Role installation throws that error message.
I thought of this:
1-Two ISA Servers in between but then I removed the feature "Strict RPC compliance"
2-The Schema master DC is located in another site.
I restarted the two ISA servers and the DCs, just in case it was a very temporary issue, but didn't work.
Thanks in advance!
Luis Olías Técnico/Admon Sistemas . Sevilla (España - Spain)