Updates often contain security measures, such as patches and upgrades, which can help keep your computer safe. It is important that you update your operating system regularly. Updates are also free of charge.
For all Windows systems through at least Windows XP, some configuration is still needed in order to activate Automatic Updates, as it is not turned on by default. This
NEEDS to be done. As new system exploits and vulnerabilities are discovered, Microsoft introduces patches and fixes that will secure Windows from these security risks. In order to protect your computer as security holes are discovered and fixed, Windows must be updated frequently. The easiest way to do this is through Automatic Updates.
Macintosh OS X computers automatically run an update program on their own. No configuration is required to activate this feature. If you want to run updates manually, click the Apple menu and then Software Update. It will search for new updates and allow you to install them immediately. You may need to restart your computer to install them.
If you have a fresh installation of Windows 2000 or XP, you might not find the options for automatically updating Windows. This is because this feature came around after both operating systems were finalized. So in order to use this feature, you have to run Windows Update and install the update that supports Automatic Updates. We suggest that you run Windows Update manually until it is finally current, then you can use this Step-by-Step guide to set up Automatic Updates.

Note: the automatic downloads are for critical updates and security patches only. This will not automatically install optional patches or driver updates. If you want those to be installed, you still have to run Windows Update manually.
When new updates are available and are downloaded, you'll see this little icon in your system tray with this message that new updates are ready to install.



Your computer is now set up for Automatic Windows Updates.