Also, to activate the application, you must first enter the product license key into it. After seeing this error, click 'Back' and select the activation item by phone.ġ) We remind you that to activate Office 2021 Pro Plus by phone - you must have the original Office application installed, you can download it via a direct link from the Microsoft server. Activation is carried out using a robot answering machine, you will need to type numbers on the keyboard of your phone. In this article, we will consider a situation when, when activating Microsoft Office 2021 online, an activation error appears as in the screenshot below, in this case, according to the advice from the second paragraph from the description of this error, you need to activate the application by phone.
