---
id: data-transfers.delta-drive-messages-in-the-folder-browser
url: https://storagestudio.us/faq/data-transfers/delta-drive-messages-in-the-folder-browser
category: "Data Transfers"
subcategory: "Paired devices and plan storage"
question: "Why can't the folder browser open Delta Drive?"
alt_questions:
  - "Delta Drive isn't set up on this Mac yet"
  - "Delta Drive is busy right now"
  - "couldn't unlock Delta Drive on this Mac"
  - "Delta Drive error in New Transfer"
  - "Storage Studio couldn't read Delta Drive just now"
short_answer: "The message says why: not set up on this Mac yet (finish setup), busy for a moment (try again shortly), couldn't unlock it (enter your recovery kit), or couldn't read it just now (check you're online, then Refresh)."
tags: ["delta drive", "folder browser", "error message"]
related: ["https://storagestudio.us/faq/data-transfers/delta-drive-in-the-transfer-picker", "https://storagestudio.us/faq/data-transfers/could-not-list-folders"]
applies_to: "all"
last_reviewed: 2026-10-01
---

# Why can't the folder browser open Delta Drive?

The message under *"Could not list folders"* tells you which case it is:

- *"Delta Drive isn't set up on this Mac yet."* — finish setting it up first.
- *"Delta Drive is busy right now and stopped answering for a moment."* — nothing is lost; try again shortly.
- *"Storage Studio couldn't unlock Delta Drive on this Mac."* — enter your recovery kit to reconnect it.
- *"Storage Studio couldn't read Delta Drive just now."* — check you're online and click **Refresh**.

Related: [Delta Drive](https://storagestudio.us/faq/delta-drive/) · [“Could not list folders”](https://storagestudio.us/faq/data-transfers/could-not-list-folders)