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July 30th, 2015 02:00

Error: VNC: connection failed: Incompatible Version. - Solved

Error: VNC: connection failed: Incompatible Version. - Solved

When attempting to connect to OS X Servers (10.5.x & 10.6.x) I receive the message "Error: VNC: connection failed: Incompatible Version." I am able to connect to OS X desktops without any issue.

Does anyone have any ideas on this one?

200 Posts

July 30th, 2015 02:00

freeman,
We currently don't have an OS X Server to test this with. Is that the only machine you get this error with? The default port for VNC is 5900. Could it be possible that on OS X a different port number is used (e.g. 5901?). What about connecting with another VNC client from a Windows/Mac machine, does that work?
This post might be applicable: http://discussions.apple.com/thread....sageID=7136797

August 1st, 2015 23:00

Red face

Daniel,
Thanks for the help. I didn't have the "VNC viewers may control screen with password" option selected on the servers. Duh.

August 6th, 2015 22:00

Hi Freeman,

I tried the same setting you probably have right now.
From windows, tightVNC gives me error messages saying "Server did not offer supported security type!"
And VNC Viewer (RealVNC) says "No matching security types\n Do you wish to attempt to reconnect to xxx.xxx.xxx.xxx (my ip)" and keeps looping the same thing.
From Mac (10.6), Checken of the VNC gives me "Connection Terminated \n Please configure Apple Remote Desktop to allow VNC Viewers to control the screen. Unknown authType 30,35.

Yes, check "VNC viewers may control screen with password" and set password would work.

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