Cyberduck Mountain Duck CLI

Version 26 (modified by dkocher, on Mar 26, 2021 at 1:10:39 PM) (diff)


Help / Howto / Mountain Duck / Preferences


An auto update feature will alert you when a new version is available and self update the application. Choose Preferences → Update → Automatically check for updates. You can also choose to update to snapshot or beta builds.

  • Snapshot builds include the latest changes and are published continuously. These builds are not manually tested.
  • Beta builds are published before a release and include the latest features and have been tested but might not have release quality yet.


You receive no update notification if your user is missing adminstrator permission.


General → Login Item

Reconnect after restarting computer. If you choose Enable Login Item and Save Workspace in Preferences → General and do not manually eject the volume prior reboot it will reconnect after login.

General → Bookmarks

Change the size of the menu items in the status bar menu. Choose between Small, Medium, and Large icons.


Connection → Mount Location


Volumes are mounted in the Volumes folder is in the application support directory. You can change the default to another folder that is writable. Note: You cannot set it to /Volumes on macOS Mojave (10.14 or later) where the directory is not writable. The setting is not available in the version from the Mac App Store.

The default is set to ~/Library/Group Containers/ Support/duck/Volumes.

Connection → Cache → Enable Cache

Allow to buffer file contents in a temporary location which is only deleted when quitting the application. If unchecked, opened files will not be automatically be available for offline usage when using connect mode Smart Synchronization.

Connection → Locking → Lock Files

Enable to prevent conflicting edits when accessing documents from a shared environment. Refer to File Locking.


Sync → Connect Mode

Change the default synchronization option. You can disable synchronization by default for all bookmarks by switching to Online.

Sync → Index Files

Index files on the server for a mounted connection in the background after connecting to ensure you can browse the all directories when offline. Enabling this option will make sure new files available on the remote storage are detected without manually choosing Reload in the context menu.

Sync → Cache Location

Change the location where to store cache files required for offline access. By default the Cache folder is in the application support directory.

Windows You must select NTFS formatted drives with support for NTFS Alternate Data Stream (ADS). FAT, FAT32, exFAT and similar formatted drives are not supported. Network drives may not support alternate data streams as well.

macOS The disk must be formatted as HFS+ or APFS.



You can disable notifications in System Preferences → Notifications. Choose None for alert style and keep checked Show in Notification Centre. This way you will no longer be disturbed by any notification displays, but can still check back the notifications in Notification Centre anytime if required.


You can disable notifications in Settings → System → Notifications and Actions. Uncheck Show notification banners and Play a sound when a notification arrives. Keep Show notifications in action center to see the notifications in Windows action center anytime if required.

Hidden configuration options

Type the defaults command given in a (in /Applications/Utilities) window and restart Mountain Duck.

defaults write io.mountainduck <property> <value>

If not existing yet you need to create the file %AppData%\Cyberduck\ Add the setting as follows:


These settings are shared with Cyberduck.

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