Microsoft's Recommendations!

Microsoft recommends that you install security software to help protect your computer from viruses and other security threats, and that you keep your security software up to date.

Some companies use products that appear to be Antivirus programs to install viruses or malware on your computer (Called as Rogues or Scarewares). When you install this program, you might also be installing the virus or other malware, without knowing it. Many companies, including those listed on this page, distribute antivirus programs. You should carefully investigate the source of antivirus and other products before downloading and installing them.

Recommended Windows 7 security software providers: 

The Antivirus companies listed below provide consumer security software that is compatible with Windows 7.

Recommended Windows Vista security software providers:

The Antivirus companies listed below provide consumer security software that is compatible with Windows Vista. 

Recommended Windows XP security software providers:

The Antivirus companies listed below provide consumer security software that is compatible with Windows XP.

Important: Before you install antivirus software, check to make sure you don't already have an antivirus product on your computer. If you do, be sure to remove the product you don't want before you install the new one. It can cause problems on your computer to have two different antivirus products installed at the same time.