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Norton Definitions for Windows XP/Vista/7/8/8.1/10

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
20160930-008-core3sdsv5i32.exe | FTP 09/30/2016 09/30/2016 54.99 MB CFC08A9174EFB8079F78BB9BC5C73DCA

Supports the following versions of Symantec antivirus software:

  • Norton Security (version 22.7 or later)
  • Norton Security with Backup (version 22.7 or later)
  • Norton AntiVirus / Norton Internet Security (version 22.7 or later)
  • Norton 360 (version 22.7 or later)
File Name Creation Date Release Date File Size MD5 | all
20160930-008-v5i32.exe | FTP 09/30/2016 09/30/2016 180.89 MB F86FCEFD4DB713378A950B8B0E5B1ED8

Supports the following versions of Symantec antivirus software:

  • Norton AntiVirus / Norton Internet Security (later than 2012, up to version 22.6.x.x)
  • Norton AntiVirus / Norton Internet Security 2008/2009/2010/2011/2012
  • Norton 360 (later than 6.0, up to version 22.6.x.x)
  • Norton 360 version 2.0/3.0/4.0/5.0/6.0
  • Norton Security (up to version 22.6.x.x)
  • Norton Security with Backup (up to version 22.6.x.x)
  • Symantec Endpoint Protection 12.1
  • Symantec Endpoint Protection 12.1.2 and later
  • Symantec Protection Engine 7.x for Windows
  • 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
20160930-008-core3sdsv5i64.exe | FTP 09/30/2016 09/30/2016 55.02 MB 196801C2CC045EA0744C081857732389

Supports the following versions of Symantec antivirus software:

  • Norton Security (version 22.7 or later)
  • Norton Security with Backup (version 22.7 or later)
  • Norton AntiVirus / Norton Internet Security (version 22.7 or later)
  • Norton 360 (version 22.7 or later)
File Name Creation Date Release Date File Size MD5 | all
20160930-008-v5i64.exe | FTP 09/30/2016 09/30/2016 182.35 MB B2686B8DD48CB19BA93827BC032F0764

Supports the following versions of Symantec antivirus software:

  • Norton AntiVirus / Norton Internet Security (later than 2012, up to version 22.6.x.x) 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, up to version 22.6.x.x) 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 (up to version 22.6.x.x)
  • Norton Security with Backup (up to version 22.6.x.x)
  • 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)
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