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The Console Log

Tunnelblick sometimes outputs detailed diagnostic information to the macOS logs.

To view the logs, launch the Console application, located in /Applications/Utilities.

If you don't see a list of different logs to view on the left side of the Console window, click "View", then "Show Log List".

If you don't see a toolbar at the top of the Console window, click "View", then "Show Toolbar".

Proceed as follows for your version of macOS:

  • In macOS Sierra and higher, click on "system.log" on the left side of the window.

  • In older versions, click on "All Messages" on the left of the Console window.

There is a "Filter" (or search) text box in the upper right corner of the Console window. If you type "tunnelblick" (without the quote marks) into the text box, Console will only show messages from Tunnelblick, not from other programs.


  1. The "tail" of the Console log is included in the data copied to the Clipboard by the 'Copy Diagnostic Info to the Clipboard' button on the 'Settings' tab of the 'Configurations' panel of the 'VPN Details' window.
  2. The "Copy Console Log to Clipboard" button copies relevant (Tunnelblick and OpenVPN) Console Log entries to the Clipboard.