Missing SPN causing domain replication issues

I was recently working with a customer where one of their Active Directory would not replicate. They were receiving Event ID 1645 in their Event logs: Event Type: ErrorEvent Source: NTDS ReplicationEvent Category: Replication Event ID: 1645Date: 2/12/2015Time: 11:12:15 AMUser: EveryoneComputer: DC-04Description:The Directory Service received a failure while trying to perform an authenticated RPC call…


Sysvol migration – Migrating to the ‘ELIMINATED’ state

I was recently working with a customer helping them migrate to the Eliminated state of Sysvol migration so I thought to highlight the steps that we took for this migration. Before the migration, we verified: – All domain controllers are in the Redirected state. Run dfsrmig /getmigrationstate against each domain controller in the domain to…


Security Compliance Manager Baselines for Windows 8.1 and Server 2012 R2

I was recently working on a project using Security Compliance Manager (SCM) for Active Directory based on Windows Server 2012 R2. This baseline is not part of SCM v3.0 tool rather you have two options to download them: An easy way is to open the SCM tool and select the option to "Download Microsoft baselines…

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Deploy a Guest Cluster Using a Shared Virtual Hard Disk

This has been a great new feature added in Windows Server 2012 R2. The possible scenario of the usage are Hyper-V failover cluster using Cluster Shared Volumes (CSV) on block-level storage or Hyper-V failover cluster using file-based storage in a separate Scale-Out File Server. The below TechNet article details the usage and deployment options:http://technet.microsoft.com/en-us/library/dn265980.aspx Read…