This hotfix addresses RPC issues that can cause the DFS Replication service to fail, possibly without corresponding failure ...

This hotfix addresses RPC issues that can cause the DFS Replication service to fail, possibly without corresponding failure events in the DFS Replication event log. If the DFS Replication service does not restart automatically, replication backlogs can occur that are not easily attributed to RPC issues. Therefore, we highly recommend that you install this hotfix on all servers participating in DFS Replication.