Updating Windows is crucial for maintaining the security, stability, and performance of a computer. There are two ways to update Windows: manually and automatically. Manually updating Windows involves clicking on the Start menu, selecting "Settings," then finding and clicking on "Windows Update." Users can then click "Check for updates" to scan for available updates, and if any are found, they can download and install them. Automatically updating Windows involves enabling automatic updates in the Services window, where users can set the startup type to "Automatic" and select "Apply" and "Ok." Updating Windows is important because it provides upgraded security, bug fixes, improved performance, new features, better software compatibility, and protection against threats. Regular updates are necessary to maintain these benefits and keep the OS up-to-date with the latest features and protections.