How to Put Windows Defender on Your PC - dummies

By Dan Gookin

If your PC is rapidly slowing down, moving so slow that you have to wait for minutes to see what you have typed on the screen, you may have spyware on your computer. One of the best ways to fight spyware is to use the Windows Defender program. When you can’t find it in your version of Windows, you can get it as an update.

First, check to see if Windows Defender is already installed; it’s found as a command on the Start button’s All Programs menu. To quickly locate Windows Defender, type Windows Defender into the search text box at the bottom of the Start menu. You should see the Windows Defender icon appear in the search results. If it’s not there, download the program by following these steps:

  1. Browse to Microsoft’s Windows Defender website.

  2. Click the big, fun Get It Now button.

    Microsoft may change its web page design, so if you don’t see the big, fun Get It Now button, look for another clue to how to download the program.

  3. Follow the directions onscreen to continue with the download.

  4. After Windows Defender has been downloaded, work through the Installation Wizard for Windows Defender.

  5. When prompted, click to use the recommended settings and opt for a complete installation.

Windows Defender immediately begins scanning your computer.