Thank you for downloading

Windows Defender

Download for Windows 32-bit

Download for Windows 64-bit

Developed by Microsoft

Your download will begin in 3 seconds. Click here if it doesn't start automatically.

Related downloads

Developed by iolo technologies

FileStream SafeShield

Developed by FileStream, Inc.

Developed by Prolific Publishing, Inc.

Avira Antivirus Pro

Developed by Avira Holding GmbH & Co. KG

Trend Micro Maximum Security

Developed by Trend Micro Incorporated

CNET TechTracker

Developed by CBS Interactive Inc

Top 10 PC Protection Tools Top 10 Personal Security Software Top 10 Firewalls

Latest downloads

Developed by Mark Russinovich and Bryce Cogswell

Developed by DMDE Software

Developed by Vue Soft

ALNO AG Kitchen Planner

Developed by ALNO AG

Advanced System Optimizer

Developed by Systweak Software