Installation

macOSWindows

Download
Move the unzipped application bundle Mountain Duck.app from the Downloads to the /Applications folder on your computer.

Note

No admin privileges for installation is required.

Mac App Store
Mountain Duck is installed through the Mac App Store in /Applications. You can always reinstall Mountain Duck on any Mac you own from the Mac App Store in → App Store… → Purchased.

Login Item
You can choose to open Mountain Duck when you log into your computer. The application will appear in Login Items of the User & Groups system preferences panel.

Finder Extension
Enabling the Mountain Duck Finder Extension provides the following options in Finder.app.

• Context menu items for files selected on a mounted volume with options such as to Reload the folder listing and copy & open URLs of files.

• Badges on file icons to display the sync status.

macOS 12macOS 13-14macOS 15.0-15.1macOS 15.2-

Enable the extension in System Preferences → Extensions → Finder.

System Requirements

macOSWindows

• Mountain Duck 3.3.5 or later requires macOS 10.12 or later

• Mountain Duck 3.0.1 or later requires macOS 10.11 or later

Registration Key

Double-click the file .mountainducklicense to apply the license and register Mountain Duck. Alternatively, you can copy the key file to the application support folder.

macOSWindows

You can manually install the registration key in

• ~/Library/Group Containers/G69SCX94XU.duck/Library/Application Support/duck/

Known Issues

Not a Valid Registration Key

This error message appears if you try to use an old license key for a newer version. Upgrade your license to the latest version of Mountain Duck or download an older version from Mountain Duck changelog.

Windows Installation

Error Code 0x24C

If you get the error code 0x24C uninstall the client, reboot the system, and reinstall the client.

0x24C. A volume has been accessed for which a file system driver is required that has not yet been loaded.

Troubleshooting

For troubleshooting purposes when reaching out for support, please share the latest installation log. The installation log file prefixed Mountain Duck_ can be found in %Temp%.

Installation with Device Management Software

You can distribute Mountain Duck with the help of Active Directory or a system management tool like Intune on Windows or JAMF on macOS and copy the license file into the application support folder after installing Mountain Duck. Installation packages are provided in MSI (Windows) and PKG (macOS) formats.

Defaults

• Add preconfigured connection profiles and bookmarks this way by copying the connection profile file (.cyberduckprofile) into the Profiles folder or the bookmark file (.duck) into the Bookmarks folder within the application support folder.

• Share default settings by using the default.properties file.

Uninstall

Using Windows Command Line:

• Regular uninstall: Mountain Duck Installer-<version>.exe /uninstall

• Silent uninstall: Mountain Duck Installer-<version>.exe /uninstall /quiet

Complete Uninstall

Follow the steps below to uninstall Mountain Duck completely.

macOSWindows

1. Close the application and navigate to the application folder using the shortcut ⌘⇧A. Select Mountain Duck.app and delete the application by choosing File → Move to Trash.

2. Navigate to the Group Containers folder within ~/Library/ and delete the folder G69SCX94XU.duck. If you changed the cache location you will have to delete that folder as well.

3. Run the Terminal.app command to reset and erase the settings for Mountain Duck: defaults delete io.mountainduck

4. Optional: Delete all saved login credentials regarding Mountain Duck within Keychain Access.app.