NSFileProviderErrorDomain error -2005 when uploading files on macOS Sequoia 15.6.1

System Information:

  • Device: Mac mini 2024
  • OS: macOS Sequoia 15.6.1
  • Nextcloud Desktop Client: Version 3.17.1
  • Sync Type: Virtual file synchronization enabled

Issue Description:

I’m encountering the following error when trying to upload files via the Nextcloud Desktop Client:

The operation couldn’t be completed. NSFileProviderErrorDomain error -2005

Despite this, all files are visible in Finder and can be opened without any issues. The client has Full Disk Accessenabled under macOS Privacy & Security settings.

Troubleshooting Steps Already Tried:

  • Verified Full Disk Access is granted to the Nextcloud client
  • Restarted the client and the Mac
  • Attempted to resync the affected folder
  • Tested with both “virtual files” and files set to “always keep on this device”
  • Confirmed the issue affects multiple files/folders

Additional Notes:

  • According to Apple documentation, error -2005 refers to NSFileProviderErrorNoSuchItem, which may indicate a problem with the File Provider API integration or cache.
  • This may be a compatibility issue between macOS Sequoia and the current version of the Nextcloud client.

Expected Behavior:
Files should upload without errors when using virtual file sync.

Actual Behavior:
Files fail to upload with the -2005 error, even though they are accessible and openable.