I'm receiving the error "'Too many security failures".

VNC has a 'blacklisting' scheme that blocks an IP address after five unsuccessful connection attempts. The IP address is initially blocked for ten seconds, but this doubles for each unsuccessful attempt thereafter. A successful connection from an IP address resets the blacklist timeout. This is built in to VNC Server and does not rely on operating system support.

If you have failed to enter your connection details correctly a large number of times, it's possible they are not correct. Please ensure that you are connecting to the correct VNC Server, and that you are entering the correct username and/or password.

To reset the blacklist, you simply need to not attempt a connection for a short period of time.

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