CompTIA Linux+ (XK0-004)
Red Hat Enterprise Linux
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How to speed up Kali upgrade and update?

sudo apt install apt-transport-https
sudo apt clean
sudo nano /etc/apt/sources.list
deb https://http.kali.org/kali kali-rolling main contrib non-free
Seems there is no VNC session running.
You can try following:
Start the vncserver to accept connection from all network address:
vncserver -localhost no
Check the status of the kex again by:
kex --status
It should now list the vnc sessions
Type the following command to start the kali windows:
kex --win -sl

Change default boot order from Kali Linux to Windows and waiting time, customize boot menu

# To change the boot options
sudo nano /etc/default/grub
sudo update-grub
# To update the picture of the grub
sudo cd /usr/share/grub/themes/kali
# now update the picture