Office 2021 Home & Student Download & Installation

Office 2021 Home & Student Download, Installation & Activation Guide (Windows)


Office 2021 Home & Student is a one-time purchase that gives you classic versions of Word, Excel, and PowerPoint for use on a single Windows device. This version is ideal for students and families who don’t need Outlook or business apps.

Follow this guide to download, install, and activate Office 2021 Home & Student on your Windows PC.


⚠️ Before You Begin


Only one version of Microsoft Office should be installed on a computer at a time.
If your PC already has Office 365, Office 2016, 2019, or any other edition installed, uninstall it before continuing.


ℹ️ System Requirements


Make sure your PC meets the minimum requirements for Office 2021 Home & Student:

  • Operating System: Windows 10 or Windows 11

  • Processor: 1.6 GHz or faster, dual-core processor

  • RAM: 4 GB (64-bit); 2 GB (32-bit)

  • Hard Disk Space: 4 GB available disk space

  • Display: 1280 × 768 resolution

  • Graphics: DirectX 9 or later with WDDM 2.0 or higher

  • Internet: Required for download, activation, and updates

  • Browser: Current version of Microsoft Edge, Chrome, or Firefox


ℹ️ Download Office 2021 Home & Student


Go to: https://setup.office.com

  • Sign in with your Microsoft account (or create one if you don’t have one)

  • Enter the 25-character license key you received after purchase

  • Click “Next” to associate the key with your account

  • Once redeemed, click “Install” to download the Office installer

✅ You can re-download and reinstall Office anytime by signing into your Microsoft account and visiting the Services & Subscriptions section.

Only one activation is allowed at a time. If you wish to install it on a new machine, you must first uninstall it from the current one.


⚙️ Install Office 2021 Home & Student on Windows


  1. Open the downloaded setup file (OfficeSetup.exe)

  2. The installer will begin automatically — no additional input needed

  3. Wait for the installation to complete

  4. Once done, launch any Office app like Word or Excel


ℹ️ Activate Office 2021 Home & Student


When prompted:

  1. Sign in with the same Microsoft account you used to redeem the product key

  2. Office will activate automatically once you’re signed in


ℹ️ Troubleshooting Activation Issues


Wrong Account?
Make sure you’re signed in with the Microsoft account you used during the redemption step.

Old Version Still Installed?
Uninstall any previous Office versions completely and reinstall.

No Activation Prompt?
Open Word > File > Account and manually sign in under the activation section.

⚠️ Still need help? Contact our support with your order number and a screenshot of any error message.


ℹ️ Need Help?


Our free 24/7 support team is ready to assist you:


✅ Ready to Get Started?


➤ Buy Office 2021 Home & Student at Buy Key Now and enjoy the essential Office apps — with no subscriptions and full offline access.