NOD32

Since the inception of VB100 awards in 1998, ESET NOD32 Antivirus boasts a success rate of 95.92% - the industry’s highest. Most antivirus vendors have success ratios in the 50 – 75 percent range. more...

ESET develops antivirus software and security solutions that deliver instant comprehensive protection against evolving computer security threats.

ESET pioneered and leads the industry in proactive threat detection. Over the past 9 years, ESET has consistently achieved the highest evaluations in comparative testing of antivirus software, both in the lab and in the wild from Virus Bulletin. Our unique ThreatSense® technology automatically collects data from our worldwide user base and immediately sends feedback on new threats, making ESET smarter, while vastly reducing false positives.

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An update failure can be attributed to many variables. Firewalls, proxies, and other software can interfere with the connection. The internet connection could have failed, or the update parameters could be incorrect. Be sure to check the following if you receive a "Virus Signature Update" error.
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NOD32 for Windows NT/2000/2003/XP/Vista - Version 2.7

it can use nod32 upgrade servers normal. more...