Using AD 2012 - do a Group Policy Update from the Group Policy MMC to all servers in the Domain and I get the eror :-
Computer Name , 8007071a , Error The Romote procedure call was cancelled.
Not sure if it stops the polcy being pushed out to the server. I have looked at the link to check what ports are needed open from the the DC's. All seemed covered as in the list in the link below
Appreciate if soemone have enlighten me how to resolve this and what is NOT beign replicated