After we buy it Microsoft Office 2021 license, the next step is to install Office, and finally to activate the product using the serial / license code. To activate the Microsoft Office license.
Microsoft Office 2021 offers two methods for activating the license:
- I want to activate the software over the Internet. (recommended)
- I want to activate the software by telephone.
If you have purchased a digital retail license, it is very possible that the first method, the activating the software license via the Internet, an error may occur. Why most of the time because of the license Microsoft Office 2021 has already been used on a large number of computers.
In this scenario, it remains at handissuing the software license by telephone. This does not mean that we will be called by someone from Microsoft to confirm the Office license. It is an alternative method if we do not have the ability to activate the Microsoft Office 2021 license online.
How to activate Microsoft Office 2021 license by phone
In our scenario we have purchased an electronic retail license for Microsoft Office Professional Plus 2021 that we want to activate after installing the Office suite on Windows 11.
1. Open Word, Excel, Outlook or any program in the Microsoft Office suite, and in the box license activation we enter the serial number / de license activation.
2. In the next step we choose "I want to activate the software by telephone.”And click“ Next ”.

3. In the next screen we have 3. In step 1 we do not select any country. Let's leave the "select a country / region".
In step 2 we have 9 groups of numbers with 7 digits each. We copy these numbers or we take a picture of them. We'll need them later.

4. Leave the box above open and access the page Microsoft Self Service Page for Phone.
5. On the page on the link above (Product Activation) we choose the 7-digit method. (7 Digits)

6. In the next step, after clicking on "7 Digits", a page with 9 fields will appear, in which we must carefully enter, in order, all the groups of numbers obtained in step 3 of our tutorial. Installation ID.

Click "Submit".
7. To the question: “How many computers have you installed, with this copy of the software?", We answer with" 0 ", then click on" Submit ".

8. In the next step we will receive eight groups of numbers, from A to H, which we must enter in the box left open in point 3 of our tutorial.

Click "Next" in the Microsoft Office Activation Wizard.
9. At the end, you will receive a message informing you that the Microsot Office 2021 license has been successfully activated. “Thank you. Your copy of Microsoft Office Professional Plus 2021 is activated. "

Close all open Office programs for the license to become active.
This is the simplest way we can activate the Microsot Office 2021 license, when we get an error when activating the serial number via internet connection.