ESET Smart Security 4 and ESET NOD32 Antivirus 4
Choose 32- or 64-bit free trial download
We recommend that you save the trial installer to your hard drive before installing.
IMPORTANT: You must uninstall your existing antivirus solution before installing either ESET Smart Security 4 or ESET NOD32 Antivirus 4. For help, visit our Knowledgebase here.
Please click on the following links to start the download for 32-bit Windows Vista/XP/2000:
| 32-bit | Version | File size | Download |
| ESET Smart Security 4 for Win XP/2000/Vista (32-bit) You need to have credentials to download ESET Smart Security 4. Click here to request them. An email with username and password will be sent to you shortly. | 4.0.437 | 34 MB |  |
| ESET NOD32 Antivirus 4 for Win XP/2000/Vista (32-bit) | 4.0.437 | 30 MB | |
Please click on the following links to start the download for 64-bit Windows Vista/XP only:
*64-bit Windows Operating System is required for these installations. Typically these are found on high-end graphics or gaming machines. Be sure to check your operating system carefully before downloading the 64-bit installers.
| 64-bit | Version | File size | Download |
| ESET Smart Security 4 for Win XP/2000/Vista (64-bit) You need to have credentials to download ESET Smart Security 4. Click here to request them. An email with username and password will be sent to you shortly. | 4.0.437 | 39 MB | |
| ESET NOD32 Antivirus 4 for Win XP/2000/Vista (64-bit) | 4.0.437 | 34 MB | |
Note to users of previous versions: You must uninstall the previous version and restart your computer before installing ESET NOD32 Antivirus 4 or ESET Smart Security 4.
Thank you for downloading ESET's award winning antivirus software. To learn more about this product, visit ESET.com. For further assistance, please contact us.
ESET Mobile Antivirus for Smartphones and PocketPCs
You need to have credentials to download ESET Mobile Antivirus free trial. Click here to request them. An email with username and password will be sent to you shortly.
| Smartphone Users | File Type | File size | Downloads |
| ESET Mobile Antivirus for Smartphones (Microsoft Windows Mobile 5.0, 6.0, and 6.1) | .exe | 288K | |
| ESET Mobile Antivirus for Smartphones (Microsoft Windows Mobile 5.0, 6.0, and 6.1) | .cab | 244K | |
| PocketPC Users | File Type | File size | Downloads |
| ESET Mobile Antivirus for PocketPC (Microsoft Windows Mobile 5.0, 6.0, and 6.1) | .exe | 288K | |
| ESET Mobile Antivirus for PocketPC (Microsoft Windows Mobile 5.0, 6.0, and 6.1) | .cab | 244K | |
Thank you for downloading ESET's award winning antivirus software. To learn more about this product, visit ESET.com. For further assistance, please contact us.