By default, ESET Security Products check every hour for a new update and are updated at least once a day with new virus definitions and occasional program component updates. These updates are a vital aspect of your computer's security. To verify that the latest virus signature updates have been received, follow the steps below.
Updating the virus signature database
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Open the main program window by clicking the icon
in your Windows notification area or by clicking Start → All Programs → ESET → ESET Smart Security or ESET NOD32 Antivirus. -
Click Update from the main menu on the left.
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The Update status should read: Update is not necessary - the virus signature database is current (You can also verify a successful update by checking the Last successful update time in the middle of the window). See Fig. 1-1 below.

Fig. 1-1 -
If the message above is displayed, you are finished. If it is not displayed, click Update virus signature database now.
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If the virus signature database successfully updates, you are finished. If you receive an error regarding an incorrect username and password, click Cancel and then click Enter Username and Password. The License Details window will appear.
Verify that your username and password are entered correctly. The following are EXAMPLES only:
Username: AV-1234567
Password: abcde12345
NOTE: Please remember to enter your username and password exactly as they are written. The username and password are case sensitive and the hyphen in the username is necessary. The password is ten characters long and all lowercase. If you are copying and pasting, make sure a blank character is not being included in the string. Also, we do not use the letter L in passwords (use the number one (1) instead), a big 0 is the number zero (0), a little o is the letter o.
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Click OK and try to update again by clicking Update virus signature database now.

