cyberduck.exe

Cyberduck File Transfer Client

Application ProcessSafeFTP Client

CPU Usage

1-6%

Memory

60-200 MB

Location

C:\Program Files\Cyberduck

Publisher

iterate GmbH

Quick Answer

Cyberduck.exe is safe. It's the official file transfer client that handles FTP/SFTP/WebDAV transfers through a dedicated process to keep the UI responsive and secure.

Is it a Virus?

✔ NO - Safe

Must be in C:\Program Files\Cyberduck or C:\Program Files (x86)\Cyberduck

Warning

Many processes normal

Cyberduck may spawn multiple child processes for transfers, authentication, and background tasks

Can I Disable?

✔ YES

Close Cyberduck or disable startup and background tasks via Preferences and Windows Task Manager

What is cyberduck.exe?

cyberduck.exe is the executable for Cyberduck, a cross-platform file transfer client that supports FTP, SFTP, WebDAV, S3, OpenStack Swift, and more. It launches a dedicated process to manage network connections, authentication, and data transfers, while keeping the graphical user interface responsive and stable during file operations.

Cyberduck uses a separate transfer engine to handle network I/O and protocol negotiation, isolating the UI from data streams. It securely manages credentials, TLS/SSH sessions, and transfer queuing, enabling reliable uploads and downloads without freezing the interface.

Quick Fact: Cyberduck was designed to keep the UI responsive by delegating transfers to a separate engine process while supporting multiple protocols through a single interface.

Types of Cyberduck Processes

Main GUI Process: User interface and control panel (1 instance)
Transfer Engine Process: Handles FTP/SFTP/WebDAV data streams and transfers
Auth & Credential Manager: Manages login prompts and credential storage
Background Sync Process: Background tasks like scheduled syncs and queue processing
Notification Process: App notifications and status updates
Clipboard/URL Listener: Watches clipboard entries for quick transfers or URLs

Is cyberduck.exe Safe?

Yes, cyberduck.exe is safe when it's the legitimate file from Cyberduck (iterate GmbH) downloaded from official sources (cyberduck.io or official installers).

Is cyberduck.exe a Virus or Malware?

The real cyberduck.exe is NOT a virus. Malware sometimes disguises itself with similar names to trick users.

How to Tell if cyberduck.exe is Legitimate or Malware

File Location:: Must be in C:\Program Files\Cyberduck\ or C:\Program Files (x86)\Cyberduck\; any cyberduck.exe elsewhere is suspicious.
Digital Signature:: Right-click the executable → Properties → Digital Signatures. Should show a valid signer like "iterate GmbH".
Resource Usage:: Normal usage is 1-6% CPU per process and 60-200 MB memory; constant high usage suggests malware.
Behavior:: Cyberduck should only run when you open the app. Background processes when the app is not in use are suspicious.

Red Flags: If cyberduck.exe is located outside the Program Files folders, lacks a valid digital signature, runs when Cyberduck isn't open, or uses unusual resources constantly, scan with antivirus. Watch for similarly named files like "cyberduck64.exe" or "cyberduck_updater.exe".

Why Is cyberduck.exe Running on My PC?

Cyberduck runs to manage active transfers, authentication, and background tasks. It may also be configured to start with Windows or run background services to monitor remote connections.

Reasons it's running:

Active File Transfers: You're currently uploading or downloading files; each transfer can consume CPU and memory.
Background Sync and Queues: Scheduled syncs, remote file checks, and transfer queues run in the background.
Auto-Launch at Startup: Cyberduck is configured to start with Windows or login due to startup entries or scheduled tasks.
Open Connections Persist: Open FTP/SFTP/WebDAV sessions remain active to monitor progress.
Notifications and Alerts: Background processes trigger notifications when transfers complete or fail.

Can I Disable or Remove cyberduck.exe?

Yes, you can disable Cyberduck. It's safe to close Cyberduck when not in use, and you can uninstall it or change startup settings to prevent auto-launch.

How to Stop cyberduck.exe

End Active Transfers: In Cyberduck's Transfers panel, pause or cancel heavy transfers.
Close the Application: Quit Cyberduck completely from the menu or system tray.
Disable Startup: Task Manager → Startup tab → Disable Cyberduck
Stop Background Tasks: In Cyberduck Preferences → Transfers, uncheck 'Run in background' or similar option
Uninstall or Revoke Access: Use Windows Settings → Apps → Cyberduck → Uninstall, or the macOS Applications folder to move Cyberduck to Trash

How to Uninstall Cyberduck

✔ Windows Settings → Apps → Apps & Features → Cyberduck → Uninstall
✔ Control Panel → Programs → Uninstall a program → Cyberduck → Uninstall
✔ If on macOS, drag the Cyberduck app from /Applications to the Trash and empty it

Common Problems: High CPU or Memory Usage

If cyberduck.exe is consuming excessive resources:

Common Causes & Solutions

Too many concurrent transfers: Reduce concurrency: Cyberduck → Preferences → Transfers → Max Simultaneous Transfers; pause or cancel extra transfers.
Background sync or queue processing: Disable or limit automatic sync: Preferences → Transfers → uncheck background transfer options.
Large or numerous remote directory listings: List a smaller set of files or filter results; avoid listing huge directories in one operation.
Outdated Cyberduck version: Update to the latest version: Cyberduck → Check for Updates
Antivirus or firewall scanning: Temporarily exclude Cyberduck from real-time scanning or adjust security software settings.
Third-party plugins or misconfigured credentials: Review and disable any plugins; re-enter correct credentials and test a simple transfer.

Quick Fixes:
1. Quick Fixes:
2. 1. Open Cyberduck Task Manager or Transfers view and identify heavy transfers; pause or cancel them
3. Check for updates: Cyberduck → Check for Updates
4. Reduce concurrency: Preferences → Transfers → Max Simultaneous Transfers
5. Clear the transfer queue and reattempt transfers
6. Restart Cyberduck or reboot the system

Frequently Asked Questions

Is cyberduck.exe a virus?

No, the legitimate cyberduck.exe from Cyberduck (iterate GmbH) is not a virus. Ensure the file is located in C:\Program Files\Cyberduck or C:\Program Files (x86)\Cyberduck and has a valid digital signature from iterate GmbH or Cyberduck.

Why is cyberduck.exe using so much CPU?

High CPU is typically due to active transfers, large directory listings, or a misbehaving plugin. Use Cyberduck Task Manager to identify the culprit and pause or cancel the transfer, then update the app.

Can I delete cyberduck.exe?

Yes, you can uninstall Cyberduck via Windows Settings → Apps or Control Panel. Your bookmarks may be stored in your profile unless you export them first.

Can I disable cyberduck.exe at startup?

Yes. Disable startup in Task Manager → Startup tab, or adjust Cyberduck preferences to stop running in the background.

Where is Cyberduck installed on Windows?

Typically in C:\Program Files\Cyberduck or C:\Program Files (x86)\Cyberduck. If installed via a package manager or alternative installer, the path may differ.

How do I configure a connection in Cyberduck?

Open Cyberduck, click Open Connection, choose a protocol (FTP/SFTP/WebDAV/Cloud), enter host, port, username, and password or key, then connect and save the bookmark.