Install high priority updatesMicrosoft Update is the online extension of Windows that helps you keep your computer up-to-date. Microsoft Update includes updates from Windows Update and from Office Update, in addition to updates for other Microsoft products and for third-party device drivers. Use Microsoft Update to install updates for your computer’s operating system, software, and hardware.
New content is added to the site regularly so that you can obtain recent updates and fixes to help protect your computer and to keep it running smoothly. To use the Microsoft Update site to install all critical updates for your computer, follow these steps:
Antivirus or anti-virus software is used to prevent, detect, and remove computer viruses, worms, and trojan horses. It may also prevent and remove adware, spyware, and other forms of malware. This page talks about the software used for the prevention and removal of such threats, rather than computer security implemented by software methods.
A variety of strategies are typically employed. Signature-based detection involves searching for known patterns of data within executable code. However, it is possible for a computer to be infected with new malware for which no signature is yet known. To counter such so-called zero-day threats, heuristics can be used. One type of heuristic approach, generic signatures, can identify new viruses or variants of existing viruses by looking for known malicious code, or slight variations of such code, in files. Some antivirus software can also predict what a file will do by running it in a sandbox and analyzing what it does to see if it performs any malicious actions.