How do I install and configure Microsoft Security Essentials?

Download the client

We can fix these problems in one action, by downloading and installing Microsoft Security Essentials. The first thing to do is go to the Web site and start the download. You should also uninstall any previously installed anti-virus software to avoid conflicts.

This gallery is also available as a TechRepublic blog post and download. Image created by Mark Kaelin for TechRepublic.


Mark W. Kaelin has been writing and editing stories about the IT industry, gadgets, finance, accounting, and tech-life for more than 25 years. Most recently, he has been a regular contributor to,, and TechRepublic.