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Fix: Eset Nod32 Virus Signature Database Update Failed

A virus signature (or virus definition) is a characteristic sequence of bytes that is common for a specific virus/malware sample. Every Antivirus program will have a database of virus signatures. In some instances, when you attempt to update a virus signature database, the process might end up in failure. On this page, we will discuss how to fix Eset Nod32 Virus Signature Database Update Failed issue.

Eset Nod32 Virus Signature Database Update Failed?

The following instructions apply to the client workstations that run ESET Endpoint products of version 4.x (and also earlier versions).

  • The Username and the Password that you have entered for your ESET product might be incorrect. So, re-enter your credentials and try updating the database once again. To check the update status for ESET NOD32, follow these steps:
  • Open the main program window of ESET NOD32.
  • Click on Update followed by selecting the Update virus signature database option.
  • In case the issue is resolved, you need not proceed with the next instruction.
  • Verify that your license has not expired.
  • If you have performed a previous update and it has gone corrupted, it could prevent the new updates from downloading. Clearing your update cache is one way of fixing the problem. Now, check the update status again. See if you have fixed the ESET NOD32 virus signature database update failure. If yes, you can stop with this step. If not, continue with the next instruction.
  • If you already had an Antivirus program, such as Kaspersky or Norton, installed on your system, make sure that it is completely removed from the system. You need to uninstall the old program because it might conflict with the update of the ESET NOD32 virus signature database.
  • In case you are using any third-party firewall, like ZoneAlarm, Norton Personal Firewall, etc., ensure that it allows your ESET product to get connected to the Internet and obtain updates.
  • If you are making use of a proxy server, configure its settings such that it does not hinder the new updates. Check if the ESET NOD32 virus signature database update is successful. If not, continue with the next technique.
  • Uninstall the ESET product from your computer. Then, reinstall the same onto your system.
  • Now, try updating the ESET NOD32 virus signature database. The update should be successful this time. Now we have seen how to fix Eset Nod32 Virus Signature Database Update Failed issue.