Automatically diagnose and fix problems with security in Windows, such as UAC (User Account Control), Windows Firewall or Data Execution Protection (DEP) to prevent security threats.
Visit the Forefront Edge Security Solution Center for help with Forefront Threat management Gateway, Forefront Unified Access Gateway, or Internet Security and Acceleration Server.
Find out how Microsoft Security Essentials helps guard your PC against viruses, spyware, and other malicious software and download Microsoft Security Essentials for free.
Get access to how-to articles and forums, one-click diagnosis and repair for many issues, and step-by-step instructions so you can fix the problem yourself.
We’ll help you connect with a Microsoft Answer Tech for complimentary advice on more basic questions, as well as training and one-on-one technical support so you can get more out of your technology.