In Ubuntu 14.04 a change was made in the VINO server (VNC) to have encryption on by default. Of course this breaks many of the VNC Clients on windows, so to allow windows users access to the linux server via VNC we need to do the following.
On the linux server open the terminal and install dconf-editor
sudo apt-get install dconf-editor
Open the program it
Navigate to:
org >> gnome >> desktop >> remote-access and Disable "require encryption"
After doing this your windows VNC client will have no problem connecting to the Ubuntu Server using Screen Sharing.
Troubleshooting Tip: If your having problems with the screen redraws make sure your using the XORG driver. Using the proprietary driver can cause redraw issues with VNC
