Download Virus Definitions

Multiple Daily Updates Learn More
Symantec Endpoint Protection 11
Norton AntiVirus 2008 and newer
Virus Definitions created May 13
Virus Definitions released May 13
Defs Version: 100513w
Sequence Number: 81509
Extended Version: 5/13/2008 rev. 23
Total Viruses Detected: 74095

Daily Updates Learn More
Symantec AntiVirus
Norton AntiVirus 2006/2007
Virus Definitions created May 13
Virus Definitions released May 13
Defs Version: 100513d
Sequence Number: 81496
Extended Version: 5/13/2008 rev. 4
Total Viruses Detected: 74095

Weekly Updates released May 7 Learn More

Norton AntiVirus for Mac Defs released May 8

Symantec AntiVirus for Handhelds Defs released April 9

Certified Intelligent Updater
The Intelligent Updater virus definitions are fully tested and certified by Quality Assurance. Intelligent Updater is an alternate delivery method for certified definitions, which consists of an executable file that can be downloaded and run manually.

How to use Intelligent Updater

How to update virus definition files using the Intelligent Updater

Trouble Shooting

Error: "The intelligent updater program is corrupted or has been modified. Scan this file using your Symantec product containing virus protection to make sure it has not been infected with a virus."

Error: "This package is not signed with a valid Symantec Signature..." when running the Intelligent Updater or Rapid Release

Error: "Program too big to fit in memory" when running Intelligent Updater

Error: "Your virus protection cannot be updated" when running the Intelligent Updater

Error: All updates failed to install on the machine. For more details about the processing, please check the log file "Log.IntelligentUpdater.txt" created in the user's temporary directory." ..when running Intelligent Updater.

Intelligent Updater vs. LiveUpdate: Click here for information.
Important information about changes to Intelligent Updater.

To receive the latest antivirus definitions, please select a language and product below.

Click here to find out how to purchase and activate virus definition subscriptions.

(This form requires JavaScript to function. Please enable JavaScript.)