Hello @clenart. Thanks for your reply to clear some mysteries of NSFileProviderReplicatedExtension. I have some additional questions related this question , hoping you can help to provide some tips. When calling signalEnumerator with the .workingSet identifier. by observing, I notice that enumerateChanges of workingSet enumerator are called. The question what item should I pass to didUpdate or didDeleteItems. For example. when a new file F1 created in folder Dir1, should I update F1, Dir1 or both? Are there more detail documents that I can reference to? The second question is when will the system call currentSyncAnchor? Thank you. B.R. Jack

Hi clenart, Thanks for the replay! However the situation is a little different. I did call addDomain with the right displayname, and finder showed the right displayname too. But some times its being changed to somewhat value that I provided (empty or other value) when I constructing another NSFileProviderManager object that is used to do other operations but not addDomain. Is it possible that displayname can be changed in other ways beside addDomain? Thanks.

I'm not sure which code snippet can help, since there are too many code that operating NSFileProviderManager :(" I do calling disconnect and reconnect on NSFileProviderManager before program exit and after program start. It recall me that the problem did happen at program exit or start. Is this helpful?

I'm not sure which code I need to provide here, but I did use disconnect before program exit and reconnect after program start! This problem did happen frequently when program exit and/or start.

I'm not sure which code I need to provide here, but I did use disconnect before program exit and reconnect after program start! This problem did happen frequently when program exit and/or start.