vncviewer always shows the alert “this connection is not secure”

Solution Unverified - Updated -


  • vncviewer always alerts that the connection is not secure, as in the image below.
  • The alert appears even when a -SecurityTypes TLS… agument is used.

    “This connection is not secure” alert


  • Red Hat Enterprise Linux (RHEL) 8, 9
  • tigervncpackage version 1.12.0 and later

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