TightVNC copy and paste from client to Windows 10

apt-get install autocutsel

edit: xstartup

!/bin/sh
 def
 export XKL_XMODMAP_DISABLE=1
 unset SESSION_MANAGER
 unset DBUS_SESSION_BUS_ADDRESS
 xrdb $HOME/.Xresources
 xsetroot -solid grey
 autocutsel -fork
 startxfce4 &