[KB2792] Activate ESET home and small office products for Windows using the Activation key



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Your ESET home and small office product for Windows is updated at least daily with new virus detections and occasional program component upgrades. These updates will fail if your product is not activated by an Activation key.


Android users: Activate premium features in ESET Mobile Security for Android

macOS users: Activate ESET Cyber Security/ESET Cyber Security Pro

If you skipped activation during the installation, follow the steps below:

  1. Open the main program window of your ESET Windows product.

  2. When the product activation screen appears, click Use a purchased activation key.

    Figure 1-1
  3. Type or copy/paste your ESET-issued Activation key into the Activation key field and click Continue. Ensure you type the activation key exactly as it is, including the hyphens. If you copy/paste the activation key, ensure you do not accidentally select additional space around the text.

    I lost my activation key.

    Figure 1-2
  4. Click Activate.

    Figure 1-3
  5. Click Done. You have successfully activated your product.

    Figure 1-4


Resolve ACT or ECP errors during activation.