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Product Update - 21.4 of Norton Internet Security, Norton AntiVirus and Norton 360

[Updated on July 10 2014: Version has released for ALL Languages via LiveUpdate]

[Updated on July 11 2014: Version available via Norton Update Center (English Only)]

We have completed testing our latest update of Norton Antivirus, Norton Internet Security and Norton 360, and have released the update. This update is available in all languagesTo download it, simply run LiveUpdate. As with our previous updates, this version is being released in a phased manner; See the below FAQ for details. A reboot will be required for Windows XP & Vista customers, however no reboot will be required for Windows 7 or Windows 8 customers.

To verify you have the update, launch the Main User Interface, click on Support, and select About.



The FAQ below answers some common questions:

1. What is the version number for this patch?

The version number is

Please note that all Norton Internet Security, Norton AntiVirus and Norton 360 customers running version 21.x with a valid subscription will receive this update for free. Not using the new Norton products? See if you qualify for a FREE update to the newest version of NIS, NAV, or N360 by visiting the Norton Update CenterThis update is not currently available via the Norton Update Center; it is only available via LiveUpdate.


2. When will I receive the patch?

As is our standard practice, we are deploying the patch in a phased manner. We have released the patch to randomly selected customers, and will then monitor our telemetry, as well as this forum, for any problems or issues.  Once we have confirmed the effectiveness of the patch, we will make it available to all customers. We will post an update on the Norton Community Forums when we make the patch available to all customers. 

3. How can I manually install these patches?

This patch is available via LiveUpdate for all languages and  Norton Update Center in english only.

4. I see the engine for this version on my system, but my product hasn't updated. What's wrong?


Nothing is wrong; that's how our updates are distributed for the phased approach. The update comes in 2 parts, and most people will get the engine. Both parts together will get your product updated.


5. What are the changes in this release?


Below are the changes and fixes in NIS/NAV/N360


- Norton Toolbar updated to 2014.7.3.12 for Firefox 30 and Internet Explorer 11 

- Fixed an issue where Google Chrome crashes with Norton Toolbar enabled

- Few more bug fixes

Sunil G A
Norton Forums Administrator
Symantec Corporation