Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello,
Welcome to Microsoft Community and thank you for posting your query.
I suggest you to uninstall the Office 2016 application from the old computer, install it on new computer and then try activating the Office application on new computer using phone and check if it helps.
To uninstall Office application, kindly refer to the following Microsoft article.
Once the uninstallation is completed, install it on new computer and activate it using the steps mentioned below:
You’ll find the number in the Activation Wizard:
- In any Office application, click File > Account > Activate Product.
- In the Activation Wizard, click I want to activate the software by telephone > Next.**Tip:**If nothing happens when you select Next, use the Enter key on your keyboard.
- Select your country/region.
- Call the Product Activation Center phone number that’s under Step 1.
Hope the information helps. Do reply if you need further assistance, we will be happy to help you.
Thank you.