After typing in your License Key, click Change product.
Select the product that you want to install (in this example, ESET Internet Security is selected) and click Continue.
Click Activate.
If you are changing to a product with fewer security features, review the message and click Continue.
Click Finish change. Your product will change following the restart.
Click Help and support → Change product.
Select the product that you want to change to (in this example, ESET Internet Security is selected) and click Continue.
Click Activate.
If you are changing to a product with fewer security features, review the message and click Continue.