Official Euro Shop Key Guide

Installation & Activation

Microsoft Office 2021 Professional Plus

📌 Useful links — keep them handy

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Full video tutorial — Installation + Activation YouTube →

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Video — Activation only YouTube →

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Errors section — Key already used, limit reached… View →

Uninstall older versions of Office

If Office 365, Office 2016, Office 2019, Office 2024 is installed on your PC, it is essential to uninstall it completely before installing Office 2021. Versions are not always compatible with each other.

Product not compatible with Mac

This product works only on Windows.

Step 1

Download Office 2021

Download the installation file matching your computer:

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Office 2021 installer (English, 64-bit)

Recommended for most PCs

📥 Download

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Office 2021 installer (English, 32-bit)

For older PCs only

📥 Download

Step 2

Installing Office 2021

Once the file is downloaded, double-click on it (or right-click → Open). Run the program « setup.exe » or the Office 2021 executable file.

Let the installation wizard guide you. It takes a few minutes.

Once finished, you will find Word, Excel, PowerPoint, etc. in the Windows search bar.

Step 3

Entering your product key

Open Word or Excel. A window appears for you to enter your product key (received by email after your purchase):

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The window does not appear?

Open Word or Excel, then go to Account → Change product key (in the left-hand menu).

Enter the product key received by email

Step 4

Choosing the activation method

Try online activation first. If it does not work, choose phone activation:

"Activation limit reached" message?

This is normal! Click "Back" and choose phone activation.

Select "I want to activate the software by phone" then click Next

If an error occurs: click "Back"

Step 5 — Final

Activation via the Microsoft website

Phone activation is done very easily through the official Microsoft website. Follow these steps:

Note your installation ID — it appears in the Office window (the groups of digits outlined in red):

Your installation ID (outlined in red) — note it down!

Go to the official activation website:
🔗 https://visualsupport.microsoft.com/

Select in order: Microsoft Office → Windows → Office 2021

Microsoft Office

Windows

Office 2021

Enter your installation ID in the website fields:

The installation ID is in the Office window

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Fill each box with the groups of digits

Click "Submit". The website will provide you with a confirmation ID. Transfer these digits into the A, B, C, D, E, F, G, H boxes in the Office window, then confirm.

✓

Congratulations!

Your Office 2021 product is now activated! You can use Word, Excel, PowerPoint and all Office applications without limitation.

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Are you abroad?

Use the free activation number for your country: See numbers by country →