macOS tags stop showing on UNAS Pro SMB shares

macOS color tags used for sorting files and folders no longer appear in Finder for items stored on a UNAS Pro SMB share. The tags used to show next to each file or folder name, but this stopped about one to two months ago. The tag data still seems to be attached to the files.

When the same file is copied to the Mac’s internal drive or to a USB drive, the tag appears again. The same problem happens on all connected Macs, so the likely cause is a change in ’s SMB behavior rather than one Mac’s settings. Resetting did not fix it.

New .DS_Store files also no longer seem to be created on the network share, even after support was turned on.

Key points

  • macOS color tags no longer show in Finder on a UNAS Pro SMB share.
  • The tags still appear after copying the file to a local Mac drive or a USB drive.
  • The issue affects all connected Macs, which points away from a single-device problem.
  • Resetting did not solve the issue.
  • New .DS_Store files are not being created on the network share.
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