Updates that do not change the content of the file are suppressed to prevent unnecessary replication (4259427)

File Replication Service “prevents” a domain controller from administering the domain because of unnecessary file replication. When Desktop Authority attempts to replicate to the NETLOGON shares of the domain controllers, the replication is rejected because the files being “sent” are identical to the files already there. Errors in the System event log state:

 Updates that do not change the content of the file are suppressed to prevent unnecessary replication traffic. Following are common examples of updates that do not change the contents of the file.

  [1] Overwriting a file with a copy of the same file.
  [2] Setting the same ACLs on a file multiple times.
  [3] Restoring an identical copy of the file over an existing one.

This is highly irregular. It is a problem with NT File Replication Service (NTFRS) interacting with other software on the server, or because NTFRS has been set to refuse updates of identical files. 

Open a command prompt and type "net share" to check that C:\WINDOWS\SYSVOL\sysvol\qatest.local\SCRIPTS is being shared as NETLOGON$. If not, fix the share permissions.

SIMPLE FIX (RECOMMENDED): Uncheck all but one domain controller as replication target in Navigation Pane > Global Options > Server Manager.  If files are replicated from Desktop Authority to one NETLOGON, NTFRS will take the changes through the rest of the domain controllers in the network.

DIFFICULT (AND NOT RECOMMENDED) FIX:  

Click on Start, Run and type” regedit”

Expand   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NtFrs\Parameters\Suppress Identical Updates To Files.  Set the data to 0.  Identical files will be allowed to replicate.