I have a multi-site, single domain environment with 16 DCs. I have a hub site with 4 DCs. I have 12 branch office environments, each with 1 DC. All DCs are GCs and DNS servers. All branch offices are setup identically, with a hub and spoke replication topology. I recently discovered that users at one of my branch offices were not getting GPO updates. A few days later, when trying to update my schema for an upcoming Exchange 2013 SP1 migration, I discovered that the replication to the troublesome site is somehow broken. I've attached a dcdiag report. Any ideas on where to start? When forcing replication in the RSAT Sites and Services console, I received the "Target Principal Name is Incorrect" message. I followed the procedures in this article (http://support.microsoft.com/kb/288167
). I no longer have any errors that appear in the GUI, but replication is obviously still not happening, as my branch office server still has not updated the schema from my hub DCs. Any ideas where to begin?
Side Note: I checked out the solution mentioned in this article, as my dcdiag reported the MachineAccount test failed with a similar value of not requiring a password. I'm not convinced this is the culprit, however, as all of my other functioning DCs have the same value.