1. /
  2. Security Response/
  3. Download Virus Definitions/
  4. Norton AntiVirus for Windows 2000/XP/Vista/7/8

Norton AntiVirus for Windows 2000/XP/Vista/7/8

As new threats emerge, Symantec immediately builds new protection updates and makes them available for download on a subscription basis. If your subscription has expired, click here.

Choosing the right definition set
To choose the correct definition set, you need to know the product name and version, and whether the operating system is a 32-bit or 64-bit version.
How to find out if you are running a 32-bit or 64-bit version of Windows
How to find the name and version of your Norton product

32-bit Platforms

The following definition sets are suitable for 32-bit operating systems only.
File Name Creation Date Release Date File Size MD5 | all
20130520-032-v5i32.exe | FTP 05/20/2013 05/20/2013 195.85 MB AF6D86C6C212AB7131B64538F1918A70

Supports the following versions of Symantec antivirus software:

  • Norton AntiVirus / Norton Internet Security (later than 2012)
  • Norton AntiVirus / Norton Internet Security 2008/2009/2010/2011/2012
  • Norton 360 (later than 6.0)
  • Norton 360 version 2.0/3.0/4.0/5.0/6.0
  • Symantec Endpoint Protection 11.0
  • Symantec Endpoint Protection Small Business Edition 12.0
  • Symantec Endpoint Protection 12.1
  • Symantec Protection Engine 7.x for Windows
File Name Creation Date Release Date File Size MD5 | all
20130520-003-i32.exe | FTP 05/20/2013 05/20/2013 224.58 MB 616DE445543EA58554C3A9BE2EFDFDCD

Supports the following versions of Symantec antivirus software:

  • Norton AntiVirus / Norton Internet Security 2007
  • Norton 360 version 1.0
  • Norton SystemWorks (all versions)
  • Symantec Mail Security for Domino v 5.x
  • Symantec Mail Security for Domino v 7.x
  • Symantec Mail Security for Domino (32-bit) v 8.0.x
  • Symantec Mail Security for Microsoft Exchange (32-bit)
  • Symantec Scan Engine 5.x for Windows
  • Symantec AntiVirus for Caching/Messaging/NAS for Windows

64-bit Platforms

The following definition sets are suitable for 64-bit operating systems only.
File Name Creation Date Release Date File Size MD5 | all
20130520-032-v5i64.exe | FTP 05/20/2013 05/20/2013 198.71 MB 2172639A8F3A6A90E2F89282B0F4FF6A

Supports the following versions of Symantec antivirus software:

  • Norton AntiVirus / Norton Internet Security (later than 2012) for 64-bit OS only
  • Norton AntiVirus / Norton Internet Security 2008/2009/2010/2011/2012 for 64-bit OS only
  • Norton 360 (later than 6.0) for 64-bit OS only
  • Norton 360 version 2.0/3.0/4.0/5.0/6.0 for 64-bit OS only
  • Symantec Endpoint Protection 11.0 for 64-bit OS only
  • Symantec Endpoint Protection Small Business Edition 12.0 for 64-bit OS only
  • Symantec Endpoint Protection 12.1 for 64-bit OS only
  • Symantec Mail Security for Domino (64-bit) v 8.0.5
  • Symantec Protection Engine 7.x for Windows (64-bit)
File Name Creation Date Release Date File Size MD5 | all
20130520-003-i64.exe | FTP 05/20/2013 05/20/2013 227.52 MB 232B51541FFB7381E3E4F4580DE1D9D8

Supports the following versions of Symantec antivirus software:

  • Norton AntiVirus / Norton Internet Security 2007 for 64-bit OS only
  • Norton 360 version 1.0 for 64-bit OS only