Starting with Service Pack 3 (SP3), the File Replication Service (FRS) event log may contain:

Event Type: Warning                              Event Source: NtFrs                              Event Category: None                              Event ID: 13567                              Date: MM/DD/YYYY                              Time: HH:MM:SS                              User: N/A                              Computer: <ComputerName>                              Description: File Replication Service has detected and suppressed an average of %1 or more file updates every hour                                           for the last %2 hours because the updates did not change the contents of the file. The tracking records                                           in FRS debug logs will have a filename and event time for the suppressed updates. The tracking records                                           have the date and time followed by :T: as their prefix.                               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.                               Suppression of updates can be disabled by running regedit.                               Click on Start, Run and type regedit.                               Expand HKEY_LOCAL_MACHINE, SYSTEM, CurrentControlSet, Services, NtFrs, Parameters, and create or update the value                              "Suppress Identical Updates to Files" to 0 (Default is 1) to force identical updates to replicate.
NTFrs suppresses duplicate updates to reduce network traffic. Event 13567 informs you that the suppression has occurred.

If you wish to prevent NTFrs suppression:

1. Copy / Paste the following to a DNTFrsC.reg file:


"Suppress Identical Updates to Files"=dword:00000000

2. Merge the DNTFrsC.reg file with your server's registry, or run regedit /s DNTFrsC.reg.

3. Restart your server for the change to take effect.

NOTE: See Changes to the File Replication Service.