Download Microsoft Security Essentials

Microsoft Security Essentials is available in many locales and languages. If it is not available in your preferred language, you can install it in any of the other languages listed here, and it will still work to help protect your PC. To download Microsoft Security Essentials, choose your preferred locale or language from the list that follows. Next, choose your operating system to begin the download process.

If you need help finding which version of Windows you're running, see Is my PC running the 32-bit or 64-bit version of Windows?

System requirements

Language

Native name

Windows version

Bulgarian

Български

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Chinese (Simplified)

中文 简体

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Chinese (Traditional)

中文 繁體

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Croatian

hrvatski

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Czech

čeština

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Danish

dansk

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Dutch

Nederlands

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

English

English

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Estonian

eesti

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Finnish

suomi

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

French

français

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

German

Deutsch

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Greek

Ελληνικά

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Hungarian

magyar‫

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Italian

italiano‫

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Japanese

日本語‫

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Korean

한국어‫

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Latvian

latviešu

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Lithuanian

lietuvių

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Norwegian (Bokmål)

norsk (bokmål)

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Polish

Polski

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Portuguese (Brazil)

Português (Brasil)

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Portuguese (Portugal)

Português (Portugal)

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Romanian

română

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Russian

Русский

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Serbian (Latin)

srpski

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Slovak

slovenčina

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Spanish

Español

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Swedish

svenska

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Thai

ไทย

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Turkish

Türkçe

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Ukrainian

Українська

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download

Vietnamese

Tiếng Việt

  • Select your version
  • Windows XP 32-bit
  • Windows Vista/Windows 7 32-bit
  • Windows Vista/Windows 7 64-bit
Download



Your PC must run genuine Windows to install Microsoft Security Essentials. Internet access fees may apply while downloading.