Microsoft Office 2021 is a one-time purchase software suite that includes essential productivity tools like Word, Excel, PowerPoint, Outlook, and more. Unlike Microsoft 365, Office 2021 does not require a subscription. Once installed, it can be used indefinitely on one PC or Mac.

If you’ve recently purchased Office 2021, follow this guide to complete the setup process using office.com/setup.

 

What is Office 2021?

Office 2021 is the latest standalone version of Microsoft Office. It is designed for users who prefer to pay once rather than subscribing to a monthly or annual plan. This version includes updated features, improved performance, and enhanced collaboration tools. It's ideal for personal use, students, or businesses that don’t require cloud-based services.

 

Step 1: Locate Your Product Key

Before setting up Office 2021, you’ll need your 25-character product key. This key is required to activate and link Office to your Microsoft account.

The product key looks like this: XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

You can find it in the following places:

  • On a card inside the product box (if purchased physically)

  • In the confirmation email (if purchased online)

  • Within your Microsoft account if previously redeemed

 

Step 2: Visit Office.com/Setup

  1. Open a web browser and go to www.office.com/setup

  2. Sign in with your Microsoft account. If you don’t have one, click on “Create one” and follow the instructions.

 

Step 3: Enter Your Product Key

  1. After signing in, you will be prompted to enter your product key.

  2. Type in your 25-character key and click Next.

  3. The system will verify your key and link Office 2021 to your Microsoft account.

 

Step 4: Download and Install Office 2021

  1. Once the product key is verified, you’ll be given the option to download Office.

  2. Choose your preferred language and version (32-bit or 64-bit).

  3. Click the Install button to start downloading the setup file.

  4. Run the downloaded file and follow the on-screen instructions.

  5. After installation, open any Office app (like Word or Excel) to activate Office by signing in again.

 

Step 5: Start Using Office 2021

After successful activation, Office 2021 is ready to use. You now have access to all the installed apps and features on your device.

 

Summary

  • Office 2021 is a one-time purchase productivity suite.

  • Go to office.com/setup to redeem your product key.

  • Sign in with your Microsoft account to link and activate Office.

  • Download, install, and start using the applications.

If you encounter any issues during the setup, Microsoft Support offers helpful resources and direct assistance.