DFS was configured and working fine on Server 2008 STD, but now it’s no longer replicating.

- 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.
- DFS Replication cannot replicate with partner <server name> for replication group <domain>\<name space>\<share>. The partner did not recognize the connection or the replication group configuration. The DFS Replication service used partner DNS name <server name>, IP address <the server ip>, and WINS address <server name> but failed with error ID: 9026 (The connection is invalid). Event ID: 5012
- The DFS Replication service is stopping communication with partner <server name> for replication group Domain System Volume due to an error. The service will retry the connection periodically. 
Additional Information: 
Error: 1726 (The remote procedure call failed.) 
Connection ID: 580D7FC3-873F-48CC-AFC1-73E96DFADCE2 
Replication Group ID: ACA5FC8A-AA2E-4D40-8ECC-3A0A8F45E5F

Solution below sorted my problem:

Open a CMD prompt in %windir%\system32\wbem

type mofcomp dfsrprovs.mof as below

C:\Windows\System32\wbem> mofcomp dfsrprovs.mof
net stop winmgmt
net start winmgmt
net start iphlpsvc
net stop dfsr
net start dfsr


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