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How do I uninstall or reinstall ESET Smart Security/ESET NOD32 Antivirus?


  • Uninstall and reinstall your ESET product to resolve an issue you are experiencing
  • Upgrade ESET Smart Security/NOD32 Antivirus to the latest version

These instructions are based on a Windows 7 environment, click your operating system below to view instructions for that OS:

 Windows 10 |  Windows 8 |OS X |  Android


  1. Download the latest version
  2. Uninstall your existing ESET product
  3. Reinstall
  4. Troubleshooting


I. Download the latest version of your ESET product

North American Customers

Download ESET Smart Security

Download ESET NOD32 Antivirus


Customers outside of North America

Download ESET Smart Security

Download ESET NOD32 Antivirus

When prompted, click Save and save the file to your Desktop.


II. Uninstall your existing ESET product

  1. Click Start → All Programs → ESET → Uninstall.

  2. After completing the uninstallation, restart your computer. If you receive an error during the uninstall process, use the ESET Uninstaller tool to complete uninstallation and then continue to section III below.

III. Reinstall

  1. Navigate to your Desktop or wherever you saved the installation package file and double-click it to open ESET Live Installer.
  2. Follow the on-screen instructions to install and activate your ESET product, or see one of the following Knowledgebase articles:

IV. Troubleshooting

  1. If installation is not successful after performing the steps in parts I, II and III, run the ESET Uninstaller tool and then attempt to install again.
  2. Contact ESET Customer Care if you still cannot install your ESET product.


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