NSFileProviderManager.getDomainsWithCompletionHandler fails with error

Question

radwar OP

Created 1w

Replies 1

Boosts 0

Participants 2

I am writing an NSFileProviderExtension for my app. Every once in a while it will get to a point where

    NSFileProviderManager.getDomainsWithCompletionHandler { domains, error in
        DispatchQueue.main.async {
            if let error = error {
               completion(.failure(.domainQueryFailed(error)))
            } else {
                completion(.success(domains))
            }
        }
    }

this always fails, once this happens then regardless of what I do - clean build, restart machine, uninstall plugin nothing works. The only way to get back to a wokring state is a full reinstall of the OS. It seems like when this happens Finder gets to a weird irrecoverable state that only a restart can fix.

Is there anything I can do to address this? I have a laptop which is in this state. Finder has this image attached Screenshot 2025-08-14 at 1.39.23 PM.png

Boost

Answer 1

DTS Engineer OP

Apple

6d

First, for a new file provider extension project, you will want to use NSFileProviderReplicatedExtension, and not NSFileProviderExtension, as shown in the following sample project:

Synchronizing files using file provider extensions.

Secondly, to look into the issue you described, you can start with gathering more info about the error. Does getDomainsWithCompletionHandler give you any error message? If it doesn't, consider capturing a sysdiagnose by installing the file provider profile and following the instruction.

Best,
——
Ziqiao Chen
 Worldwide Developer Relations.

0