Office 2021 Professional Plus Download Instructions

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📺 Please watch the video below, which demonstrates the full installation process from start to finish.You do not need to install anything yet — the video is provided to help you become familiar with the steps involved.

Once you’ve watched it, please follow the instructions below to complete the installation.


IMPORTANT: Please follow each step carefully. Each one includes a screenshot showing exactly what to click.

📥 Install Links:

💡 Which one should I choose?

Most users should choose the 64-bit version, as it’s faster and supports large files.
Choose the 32-bit version only if:

  • Your computer is older and only supports 32-bit
  • You use add-ins or software that only work with 32-bit Office

To check your system type:
Go to Settings > System > About and look under “System type”.

✅ Step-by-Step Installation

Step 1: Open the downloaded file

Step 1

Step 2: Click Install

Step 2

Step 3: Click Yes when prompted — ignore the mention of Microsoft 365, it will install Office 2021

Step 3

Step 4: Wait for the installation to finish

Step 4

Step 5: Click Close

Step 5

🧩 Activation Steps

Step 6: Search for Word in the Start Menu and open it

Step 6

Step 7: If a license agreement appears, click Accept

Step 7

Step 8: Click Account on the left-hand menu

Step 8

⚠️ IMPORTANT: You must follow the remaining steps to activate Office. If not activated, Office will work for 30 days and then deactivate.

Step 9: Click Change Product Key

Step 9

Step 10: Enter your product key

Step 10

Step 11: Click Activate Office

Step 11

Step 12: Close and reopen Word

Step 12a
Step 12b

Step 13: If the Activation Wizard shows, click Next

Step 13

Step 14: Click Close on the wizard

Step 14

Step 15: Go to Account again from the left-hand menu

Step 15

Step 16: Confirm Office says “Product Activated”

  • If it doesn’t, reboot your PC
  • Re-enter the key
  • Sign out of any Microsoft accounts on the left-hand side of the Account page

Step 16

🎉 All Done!

Your installation and activation of Microsoft Office 2021 is now complete. You’re ready to start using Word, Excel, PowerPoint, Outlook, and more!