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

Norton AntiVirus for Windows 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
20150522-017-v5i32.exe | FTP 05/22/2015 05/22/2015 537.15 MB 442A3FC288AC16FD1035C4F940F8D215

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
  • Norton Security
  • Norton Security with Backup
  • Symantec Endpoint Protection 12.1
  • Symantec Endpoint Protection 12.1.2 and later
  • Symantec Protection Engine 7.x for Windows
File Name Creation Date Release Date File Size MD5 | all
20150522-003-i32.exe | FTP 05/22/2015 05/22/2015 653.97 MB 4F959C72CEFAD77420DD380BB6CE6415

Supports the following versions of Symantec antivirus software:

  • Norton AntiVirus / Norton Internet Security 2007
  • Norton 360 version 1.0
  • Symantec Mail Security for Domino v 7.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
20150522-017-v5i64.exe | FTP 05/22/2015 05/22/2015 540.03 MB 98DA8B16A83C892A32CECD40F44E40EF

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
  • Norton Security
  • Norton Security with Backup
  • Symantec Endpoint Protection 12.1 for 64-bit OS only
  • Symantec Endpoint Protection 12.1.2 and later for 64-bit OS only
  • Symantec Protection Engine 7.x for Windows (64-bit)
File Name Creation Date Release Date File Size MD5 | all
20150522-003-i64.exe | FTP 05/22/2015 05/22/2015 656.93 MB C1147E0F08429527060986E1D33EBB97

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