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To save yourself time and money, I advise you to download one small but effective program. You need an activator program that will independently select and install the activation key. This is a proven fast solution that always works 100%. You can familiarize yourself with this version of KMS Auto Net which I use personally. There are instructions on the site just in case, so even if you have no experience in such an activity before, you can download the activator and activate the necessary product from Microsoft.