Simply kill your VNC server process

Most users go for option 2.

1 =
killall Xvnc4
2 =
vncserver -kill :1
and restart the VNC with this command in putty or any terminal client:

1 =
vnc4server -depth 24
2 =
vncserver -depth 24
I am using debian, so adjust vnc4server,Xvnc4 to whatever you are using


Another Solution for people not using vnc,

Change ur 16bit to 32bit that will work.
Desktop --> Properties --> Setup Colorquality to 32bit.


Credits TO Pascal20 on ************