Go to redeem.microsoft.com/, sign in using your existing Microsoft account, or create a new one.
Enter your 25 character product key, click next.
- “Code not found. Try re-entering it. If that doesn’t work, contact the merchant.” – Please try the guide HERE.
- “This code has already been redeemed.” – Please scroll down this page to the “Installing Office” section.
If the product is correct, select Confirm to finish the redemption process. Now you’re ready to download and install Office.
Go to the Microsoft Services & subscriptions page and sign in using your Microsoft account if you’re not signed in already. This is where you can see and manage all of your activated Office products linked to your Microsoft account, if you need to re-install a program in the future you can do so from this page at any time.
Click the Install link next to the Office product you wish to download and install.
Select the options you want with the “Other options” link (such as 64-bit and language changes), and then click Install. This will download the setup file to your computer which you can then open for the installation process to take place.