USN Rollback, Virtualized DCs and improvements on Windows Server 2012.

The USN rollback issue has been causing hundreds of support calls and AD replication halts throughout the world since the introduction of AD in Windows 2000 Server and up to Windows Server 2008 R2. Every DC maintains a table – ReplUpToDateVector – (or Up-to-Dateness Vector) per Naming Context (NC or AD partition).These tables record data from…

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