Last Updated: October 2025
| Error Code | Message | Solution Using Free Servers | | :--- | :--- | :--- | | | "Update server not found" | Switch to http://update.eset.com (HTTP, not HTTPS) | | 20415 | "Invalid signature of update file" | Clear update cache + switch to http://u7.eset.com | | 20418 | "License expired" | This server method cannot fix expired licenses. You need a new license key. | | 20011 | "Connection refused" | Firewall is blocking ESET. Add an exception for ekrn.exe and egui.exe . | | 20013 | "HTTP/HTTPS proxy error" | Your network uses a proxy. Go to Advanced Setup → Network → Proxy Server → Configure. | Free vs. Paid Update Servers – What’s the Difference? You might wonder: Why would anyone pay for updates if free servers exist? eset nod32 update server list free
http://um10.eset.com/download http://um11.eset.com/download http://um12.eset.com/download http://um13.eset.com/download These legacy servers only provide definition updates (virus signatures). They will not update the program modules. Your antivirus program will remain outdated, but still capable of detecting older malware. ⚠️ Security Warning: Running ESET NOD32 v4 on Windows XP is highly risky. Consider upgrading your OS if possible. Troubleshooting Common Update Errors with Free Servers Even with the correct server, issues can arise. Here is a quick troubleshooting table: Last Updated: October 2025 | Error Code |
If you are an ESET NOD32 user, you know that keeping your antivirus definitions up-to-date is the single most critical task for staying protected against zero-day malware, ransomware, and phishing attempts. However, what happens when the default update server fails? Slow downloads, "License expired" errors, or update failures can leave you vulnerable. Add an exception for ekrn
| Feature | Free Update Servers | Paid (Licensed) Servers | | :--- | :--- | :--- | | | ✅ Yes (all) | ✅ Yes | | Program Module Updates | ❌ No (legacy only) | ✅ Yes | | Pre-Release Updates | ❌ No | ✅ Yes (beta signatures) | | Offline Installer Updates | ❌ No | ✅ Yes (via ESET Mirror Tool) | | Technical Support | ❌ No | ✅ Yes (24/7) |
