Please remember to mark the replies as answers if they help and unmark them if they provide no help. Failure to do so may result in data loss due to unexpected conflict resolution during the recovery of the replicated folders. So there is something wrong with replication as it does not finish. For customers looking to address these risks and improve visibility into critical replication processes without migrating everything to Azure, Resilio Connect is a comprehensive solution. Log in to the domain controller and launch PowerShell. The following domain controllers have not reached Global state ('Prepared'): Domain Controller (Local Migration State) - DC Type =================================================== The resolution for each problem is available on the internet generally in standalone posts. DFSR Troubleshooting: Handy quick tips - TechNet Articles - United Sharing best practices for building any app with .NET. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Once we fix AD replication, the remote site DC updates its domain partition and during polling intervals, the DFSR remote member detects changes and start aninitial sync. How do i troubleshoot ? If roaming profiles or users PST are part of DFSR, those users should log off / close the PST upon work closure. Scenario 1: After starting a SYSVOL migration from File Replication Service (FRS) to DFSR, no domain controllers enter the Prepared phase, and remain stuck at Preparing. Restoring data from backup is the only solution in that case. https:/ Opens a new window/www.experts-exchange.com/questions/28116016/DFS-Replication-Issue.html. In a domain that is configured to use the File Replication Service, the SYSVOL folder is not shared after you in-place upgrade a Windows Server 2019-based domain controller from an earlier version of Windows. State information might be stale due to AD latency. The DFSRMIG.EXE /GetMigrationState command generates the following output for all Windows Server 2019 domain controllers: Dfsrmig /getmigrationstate Note The two technologies in DFS are DFS Replication (DFS-R) and DFS Namespaces (DFS-N). The PDCE and FMSO Roles are on one Windows2016 Server in the parent domain. I just saw the following on the 2008 server: DFS Replication failed to clean up old staging files. CN=DFSR-GlobalSettings,CN=System,DC=