Hello Zac,
I'm Ibhadighi and I'd happily help you with your question. In this forum, we are Microsoft consumers just like yourself.
To link your Microsoft Office Professional 2021 perpetual license to your Microsoft account, you should redeem your product key and install Office from your Microsoft account. Here's how you can do this:
1. **Redeem Your Product Key**:
- Go to office.com/setup or to the Microsoft redemption page provided with your purchase.
- Sign in with your Microsoft account, or create one if you don't have one. Make sure it’s the account you want to associate with your Office license.
- Enter the product key provided by the third-party website. It’s usually a 25-character alphanumeric code.
- Follow the prompts to redeem your product key.
2. **Install Office**:
- After redeeming your product key, you might be directed to a page with a link to install Office. Click 'Install Office' to download the Office setup file.
- Run the Office setup file and follow the instructions to install Office on your computer.
- Once installed, open any Office application, such as Word or Excel.
- Go through the initial setup prompts and when asked, sign in with the same Microsoft account you used to redeem your product key.
3. **Verify the Installation**:
- After the installation, you can verify that your Office is linked to your Microsoft account by going to your Microsoft account page.
- Log in and go to the Services & subscriptions tab.
- You should see Office Professional 2021 listed there, indicating that the product key has been successfully linked to your account.
Please keep in mind that if the product key has already been used or is not legitimate, you might not be able to link it to your Microsoft account. Always be cautious when purchasing software keys from third-party websites, as some may sell unauthorized or counterfeit keys.
I hope this helps.
Best Regards,
Ibhadighi