Version Focus: Legacy (v8.x) / General Product Line License Reference: 803191
Regardless of whether you use NOD32 or Smart Security, this update patches the same underlying engine. Here is what actually changed:
Users searching for "ESET NOD32 Antivirus and Smart Security 803191" are often trying to decide which product to install. Here is the breakdown as of this build.
| Feature | NOD32 Antivirus (803191) | Smart Security (803191) | | :--- | :--- | :--- | | File & Memory Scan | Yes | Yes | | Heuristics (Augur) | Yes | Yes | | UEFI Scanner | Yes | Yes | | Script-Based Attack Mitigation | Yes | Yes | | Network Attack Protection | No | Yes (Blocks RDP brute force) | | Bidirectional Firewall | No (Uses Windows Firewall) | Yes (Full stateful inspection) | | Webcam Protection | No | Yes | | Anti-Spam (POP3/IMAP) | No | Yes (Outlook/Thunderbird plugin) | | Secure Data (Encryption) | No | Yes (VeraCrypt-style containers) | eset nod32 antivirus and smart security 803191
Verdict for 803191: If you are on a home network behind a router, NOD32 is sufficient. If you travel with a laptop and connect to public Wi-Fi (airports/coffee shops), Smart Security’s firewall in this build is essential—it now includes a "Wi-Fi Inspector" that scans the access point for rogue DNS settings.
The 803191 build specifically patches the "PrintNightmare" variant and SMBGhost (CVE-2020-0796) vectors. It now monitors spoolsv.exe and lsass.exe for abnormal memory calls—a feature previously reserved for ESET’s enterprise endpoint products.
Yes. Build 803191 is classified as a "stability and performance" release, not a feature-bloated one. Product Overview: ESET NOD32 Antivirus & Smart Security
Potential (Minor) Issue: A handful of users on the ESET forum reported that custom HIPS (Host Intrusion Prevention System) rules created in version 16.x were reset to default after updating to 803191. If you have complex custom firewall rules (e.g., blocking specific IP ranges for work), export your configuration before rebooting.
If you have specifically downloaded the 803191 installer (usually via the offline .msi file from ESET’s business portal), follow this protocol:
803191 to hang at 47% during installation.803191 will automatically register with the Security Center, but ensure "Tamper Protection" is off manually.XXXX-XXXX-XXXX-XXXX) and the newer .lic file.C:\Windows\System32 folder to prime the cache.Troubleshooting error 803191: If you receive a virus signature database error with this number, it is a false positive. Update to module 20348B via the internal updater. Uninstall third-party AV: Use the official uninstaller tool
If you are running ESET NOD32 Antivirus or ESET Smart Security Premium, you have likely noticed a recent update prompting a reboot. You might have spotted the version build 803191 in your "About" section.
While 803191 looks like just another number in the changelog, this specific build represents a quiet but significant shift in how ESET handles performance, phishing detection, and kernel-level exploits.
Here is everything you need to know about build 803191 for both the standalone antivirus (NOD32) and the full security suite (Smart Security).
The isolated browser (secure banking) now supports biometric pass-through. Previously, if your bank required a fingerprint for 2FA, the sandbox blocked the hardware handshake. With 803191, fingerprint readers and smart card readers work natively inside the secure browser.