1. Symantec/
  2. Security Response/
  3. Download Virus Definitions/
  4. Norton Definitions for Windows XP/Vista/7/8/8.1/10

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
20161203-001-core3sdsv5i32.exe | FTP 12/03/2016 12/03/2016 85.18 MB 823A790F89C28109072B4CDE7B2AE00E

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
20161203-001-v5i32.exe | FTP 12/03/2016 12/03/2016 200.5 MB DA1F4EFEFB105F9AE7D3FE4BFAD15419

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
20161203-001-core3sdsv5i64.exe | FTP 12/03/2016 12/03/2016 85.21 MB B109F96B3BEC8F532CB97C0266AA27DD

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
20161203-001-v5i64.exe | FTP 12/03/2016 12/03/2016 201.96 MB 4AF8DA6E741EF20E83D8469FBD65C3B5

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)
  • Twitter
  • Facebook
  • LinkedIn
  • Google+
  • YouTube