DFS: File randomly missing?

We have a DFS installed on two different servers.

Running health reports finds no errors and generally everything seems OK, but:

  1. On some computers, files will be saved on a DFS folder randomly, but will not actually appear on other computers or physically on the server. Sometimes they will appear on other computers if logged under the same user, but other users, including the admin, would not be able to see them.

  2. Other files, have just disappeared.

Update:

DFS Replication Health Report (Show All) 

Data collected on: 15 December 2015 at 11:43:32 (GMT0:00) 
Replication Group: TeachingData (NSNET.NET) 
Reference member: SRV-FS02 (srv-fs02.nsnet.net) 
Server scope: Selected 2 of 2 servers 
DFS Replication bandwidth savings: 0.00% 
Server health:  Servers with no errors or warnings (1)  Servers unavailable for reporting (0)   
Servers with DFS Replication errors (1)  Servers with DFS Replication warnings (1) 



Report Loading. Please wait . . .
ERRORS  (1 server with errors)(Show All)
SRV-FS02   (1 error)    (View Server Details) 
Cannot access the local WMI repository.  


WARNINGS  (1 server with warnings)(Show All)
SRV-FS02   (1 warning)    (View Server Details) 
Reference member returned no replicated folders.  


SERVERS UNAVAILABLE FOR REPORTING  (All servers reporting)
SERVER DETAILS  (2 servers)(Show All)
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SRV-FS02(Show All)
DNS name: srv-fs02.nsnet.net 
Domain name: NSNET.NET 
Reference domain controller: -- 
IP address: fe80::a888:789d:b82:1354%16,192.168.0.67 
Site: Default-First-Site-Name 
Time zone: (GMT0:00) 
ERRORS (There is 1 error to report)

Cannot access the local WMI repository.  
Affected replicated folders: All replicated folders on this server. 
Description: Due to the following error, the DFS Replication reporting mechanism cannot access the WMI (Windows Management Instrumentation) namespace to retrieve certain reporting information. Error ID: 0x80041002.  
Last occurred: 15 December 2015 at 11:43:32 (GMT0:00) 
Suggested action: For information about troubleshooting WMI errors, see WMI help.  

WARNINGS (There is 1 warning to report)

Reference member returned no replicated folders.  
Description: Backlog calculations cannot be performed because the reference member returned zero replicated folders.  
Last occurred: 15 December 2015 at 11:43:33 (GMT0:00) 
Suggested action: For information about troubleshooting backlog problems, see The Microsoft Web Site.

We had the same issue and we opened a Microsoft Case. They ended up deleting the .TMP file extension exclusion and setting it up again. That resolved our issue.