How to install an antivirus program on a computer?

Antivirus programs help prevent viruses and spyware from infecting a computer and so are one of the essential software programs every computer should have running at all times. There are thousands of viruses and spyware on the internet and any one of them will cause damage to personal files or the computer's operating system.

Install the antivirus program

To install an antivirus program on your computer, follow the steps below.

1. If you purchased the antivirus program from a retail store, insert the CD or DVD into the computer's disc drive. The installation process should start automatically, with a window opening to help guide you through the install process.
2. If you downloaded the antivirus program on the internet, find the downloaded file on your computer. If the downloaded file is a zip file, unzip the file to extract and access the installation files. Look for a file named setup.exe, install.exe, or something similar, and then double-click that file. The installation process should start, with a window opening to help guide you through the install process.
3. In the installation process window, follow the steps provided to install the antivirus program. The install process can offer recommended options so the antivirus program can function properly, which in most cases can be accepted as is. The one exception is if the install process recommends that you also install any toolbars for internet browsers or other helpful programs for your computer. If prompted to install different software along with the antivirus program, uncheck all boxes or decline the install of those extra programs. No additional programs should be required for the antivirus program to install and run successfully on your computer.
4. When the install process is complete, close out of the install window.
5. If used, remove the CD or DVD from the computer's disc drive.

The antivirus program is currently installed and ready to use. While it may not be required, it is recommended that you restart your computer so that any changed settings in the operating system will take effect correctly.

After being installed, you may also receive a prompt to update the antivirus program. It is highly recommended that you update it, even if you do not receive a prompt to do so. Proceed to the next section below for help on how to update the antivirus program.

Update the antivirus program after installation

Out of the box, antivirus programs are not up-to-date and are missing the most recent virus and spyware definitions. Without the latest definitions, the antivirus program will not know about the most recently created viruses and spyware, making your computer liable to infection.

After installing the antivirus program, we highly recommend that you update it with the latest virus and spyware definitions. The updates will allow the antivirus program to protect your computer from all viruses and spyware.

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