Activation failed – common scenarios

If the activation of ESET Internet Security is not successful, the most common scenarios are:

•Activation key is already in use.

•You have entered an invalid activation key.

•Information in the activation form is missing or invalid.

•Communication with the activation server failed.

•No connection or disabled connection to ESET activation servers.

Verify that you entered the proper activation key and your internet connection is active. Try to activate ESET Internet Security again. If you use an ESET HOME account for activation, see the ESET HOME Subscription and subscription management - Online Help.

If you still cannot activate ESET Internet Security, the ESET Activation Troubleshooter walks you through common questions, errors and problems about activation and licensing (available in English and several other languages).