How do I apply patch for windows computer?

To apply latest patch is critic way to protect windows computer.
For computers which joined XJTLU domain and connected to campus network:
If you found update icon at the right corner of the desktop, please double click it to open the Windows Update window.

Then click Install updates. Reboot the system after the installation.


Note:
If there's no update icon at the right corner of the desktop, please follow below steps to access Windows Update window.
Click Start button at the left corner of desktop
Click Control Panel

Click Windows Update

Click Install updates. Reboot the system after the installation.