Important:
Before installing, we recommend uninstalling your current protection (including older versions of ESET software), to ensure a smooth transition. Click here to access the list of uninstallers for common antivirus programs.
We recommend that you save the trial download file to your computer before installation.
Please click on the following links to start the download for 32-bit Windows 7/Vista/XP/2000:
| ESET NOD32 Antivirus 4 (32-bit) | Version | File size | Download |
| Microsoft® Windows® 7/Vista/XP/2000 | 4.0.474.0 | 32 MB |  |
Please click on the following links to start the download for 64-bit Windows 7/Vista/XP:
| ESET NOD32 Antivirus 4 (64-bit) | Version | File size | Download |
| Microsoft® Windows® 7/Vista/XP | 4.0.474.0 | 35 MB | |
Note for 64-bit users:
64-bit Windows Operating System is required for these installations. Typically these are found in servers and high-end workstations with high processing power. Be sure to check your operating system carefully before downloading the 64-bit version.
Thank you for downloading ESET’s award winning antivirus software. For further assistance please contact us.
