How to fix "Error code 9" on macOS

Help & Troubleshooting

Product:
Synergy 1
Operating system:
macOS

Error code 9 means that the config app (the GUI) stopped the main process (the Core). This could be because something went wrong, or because it was manually stopped by clicking the Stop button.

  1. User clicked Stop or Restart.
  2. Server or client mode was switched, and the Start button was clicked.
  3. There is invalid (probably expired) license.
  4. A client connect to a server using TLS, which prompted the fingerprint dialog, that was dismissed (i.e. the user did not accept the fingerprint).

Please get in touch with us so we can help you troubleshoot your log files.

Talk to a human

If this article didn't help, you can talk to someone on our support team (unless we sent you here, in which case please reply via the ticket you already have open).

Contact support
Sorry your search terms are not showing any results
What to do when you see an error message box
Prevent Fedora from downgrading Synergy
Known bugs and gotchas
How to get diagnostic info
How to reinstall Synergy
Troubleshooting the background service in Synergy 3
What ports does Synergy use?
How to install Synergy 3
How to uninstall Synergy 3
Our new licensing model: Maintenance license
How to update your license in Synergy 3
How do I activate a new serial key after upgrading?
Solution: App already in use
Solution: Holding a key down causes cursor to return to server
How do I type Ctrl+Alt+Del on a Windows client?
Do I install ARMHF or ARM64 on my Raspberry Pi?
How to fix "Error code 9" on macOS
How to fix "Error code 11" on macOS
How to install Synergy 1 on Linux
How to resume the connection after sleeping or hibernation on Windows
How to do a ping test
Keyboard not working on macOS client (but mouse works)
How to install Synergy 1 on Windows
How to install Synergy 1 on macOS
Fix for Ubuntu (switch from Wayland back to Xorg)
How to do a silent install on Windows
Configure Synergy for multi-user support
Automatically run Synergy on start-up
Creating and using text config files
Start here: Install and configure
What are the differences between the business and personal editions?
Unable to see cursor on the Linux client computer
Keycode or key combinations don’t match
How to fix the macOS Security & Privacy Accessibility settings
What to do if macOS does not save the configured settings?
Windows installation problem: Service cannot start
Windows profile usernames containing non-UTF characters
How to make Synergy work with UAC prompts
How to start Synergy at login on a Raspberry Pi
Basic troubleshooting steps
How to fix lag issues by using an ethernet connection
What to do when the mouse cursor lags?
How can I run Synergy from the command line?
Multiple monitor and custom monitor positioning support
How can I add more computers to Synergy?
Add a keyboard shortcut to change to different screens
How do I add a hotkey to restart the server computer?
How can I swap modifier keys?
How to lock the cursor to a computer?
How to disable auto-config on the client computer?
How to reinstall Synergy 1
How can I receive a VAT invoice?
How can I request a refund?
Can I share audio using Synergy?
Do all international keyboards work with Synergy?
What are the languages supported?
Does Synergy work with iOS, Android, or ChromeOS?
Operating system and hardware requirements
What is the difference between each version of Synergy?