Updating the program

Regularly updating ESET Internet Security is the best method to ensure the maximum level of security on your computer. The Update module ensures that the program is always up to date in two ways, by updating the virus signature database and by updating system components.

By clicking Update in the main program window, you can view current update status including the date and time of the last successful update and if an update is needed. The primary window also contains the virus signature database version. This numeric indicator is an active link to ESET’s website, listing all signatures added within the given update.

In addition to automatic updates, you can click Update now to trigger an update manually. Updating the virus signature database and updating program components are important parts of maintaining complete protection against malicious code. Please pay attention to their configuration and operation. You must activate your product using your License key to receive updates. If you did not do so during installation, you can enter your license key to activate your product when updating to access ESET update servers.


Your License key is provided in an email from ESET after purchasing ESET Internet Security.


Last successful update – The date of the last update. If you do not see a recent date, your virus signature database may not be current.

Virus signature database version – The virus signature database number, which is also an active link to the ESET website. Click it to view a list of all signatures added in a given update.

Click Check for updates to detect the latest available version of ESET Internet Security.

Update process

After clicking Update now, the download will begin. A download progress bar and remaining time to download will be displayed. To interrupt the update, click Cancel update.



Under normal circumstances the message Update is not necessary – the virus signature database is up to date will appear in the Update window. If this is not the case, the program is out of date and more vulnerable to infection. Please update the virus signature database as soon as possible.

The previous notification is related to the following two Virus signature database update ended with an error messages about unsuccessful updates:

1.Invalid license – The license key has been incorrectly entered in update setup. We recommend that you check your authentication data. The Advanced setup window (click Setup from the main menu and then click Advanced setup, or press F5 on your keyboard) contains additional update options. Click Help and support > Change license from the main menu to enter a new license key.

2.An error occurred while downloading update files – This can be caused by incorrect Internet connection settings. We recommend that you check your Internet connectivity (by opening any website in your web browser). If the website does not open, it is likely that an Internet connection is not established or there are connectivity problems with your computer. Please check with your Internet Service Provider (ISP) if you do not have an active Internet connection.



For more information please visit this ESET Knowledgebase article.