Home & Business Product Key for Office 2021 is in the confirmation email you received after buying your digital copy of Windows. This key is a license to run the program on your system.
For instance, if you share the Windows program with someone, both systems will crash as the unique code is for one user. Your product key is for your windows, and you need to keep it safe.

How do I find my Home & Business product key for Office 2021?
- Firstly, visit your account in the Microsoft Store.
- Secondly, log in to your account.
- After this, tap on Install from a disc.
- Then, tap I have a disc.
- Finally, tap on View your Product key. The code will appear on your screen
Where do I Find my Home & Business product key for Office 2021?
Usually, if you have purchased a physical copy of Windows, the product key will be on a label or card inside the box that Windows came in.
- If Windows is installed earlier, the product key will appear on a sticker on your device.
- If you have lost or cannot find the product key, Contact the manufacturer.
Activation of Home and Business product key for Office 2021
To do this procedure,
- Activate Office by signing in with a Microsoft Account.
- Manage your new subscription, without a product key.
Can I change my product key for Windows
Yes, you can change your product key for
- Office Home and Business,
- Office Professional, Office Home and Student, and also
- individually purchased applications.
In addition, if you are still not able to find the solution to this, we will recommend you to have a chat with our Technical Support. I am sure they will help you resolve your concern and also you can take help from an IT expert to help you upgrade your windows.