Windows Defender  Beta 2 (Build 1051)

- Enhanced performance through a new scanning engine.
- Streamlined, simplified user interface and alerts.
- Improved control over programs on your computer with enhanced Software Explorer.
- Multiple language support with globalization and localization features.
- Protection features for all users, whether or not they have administrator rights on the computer.
- Support for assistive technology for individuals who have physical or cognitive difficulties, impairments, and disabilities.
- Support for Microsoft Windows XP Professional x64 Edition.
- Automatic cleaning according to your settings during regularly scheduled scans.