To install Microsoft 365 Family on a second computer using the product key, you need to ensure that the key is associated with the correct Microsoft account. Here are the steps you should follow:
- Check the Microsoft Account: Make sure that you are using the same Microsoft account that was used to activate the product key initially. In your case, it seems that the key was used with the email associated with dkline34@....
- Sign In with the Correct Account: On your wife's computer, sign in to Microsoft 365 with the account that has the subscription associated with it. If the key was used with your account, you will need to either use that account or transfer the subscription.
- Install Microsoft 365: If you are using the correct account, you can go to the Microsoft 365 website, sign in, and download the Office apps from there.
- Remove Product Key from Other Account: If you want to use the product key with your wife's account, you may need to remove it from the other account. You can do this by contacting Microsoft support for assistance.
- Re-enter the Product Key: If you have successfully removed the key from the other account, you can then enter it on your wife's account to activate Microsoft 365 on her computer.
If you encounter any issues during this process, it may be helpful to consult Microsoft support for further assistance.