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# Active Directory synchronizer error

Entries are created with a \*cnf:{guid} suffix or Host name is appended with cnf, and the entry name also contains a guid suffix.

### Solution

This is a problem caused by Multimaster replication of directory objects. When there are name collisions, the system automatically renames one of the accounts by appending CNF to indicate conflict resolution and a GUID which is guaranteed to be unique.

There is a command to run to remove these objects, namely repadmin/removelingeringobject, please consult these references for the recipe to follow:

* [Troubleshooting Directory Data Problems](http://technet.microsoft.com/en-us/library/bb727059.aspx) (Microsoft Learn archived content)
* [CNF remove from AD](https://social.technet.microsoft.com/Forums/windowsserver/en-US/e9327be6-922c-4b9f-8357-417c3ab6a1af/cnf-remove-from-ad?forum=winserverDS) (Microsoft Learn archived content)


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