Learn how to install the latest operating system updates on your computer.
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Periodically, Microsoft and Apple issue system patches to correct security vulnerabilities found in the operating system. To protect your computer from outside hackers, you must obtain these patches and install them on your computer.
On Microsoft Windows computers, the easiest way to install the patches is to run Windows Update, either automatically or manually, as described below. Instructions for updating Macintosh software manually or automatically are also provided below.