Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hello,
Thank you for your response and for providing more information.
To deactivate your email account from Office Home and Business 2016 you need to contact the Microsoft Support over the phone:
http://windows.microsoft.com/en-us/windows/contact-support
- Click on Contact Supportwhich appears in the bottom right of the page > then click on Ask Microsoft.
- Now select Account and billing > Office or Office 365 > Chat online with a Microsoft Answer Tech, Schedule a callor Call me as soon as possible or Schedule a call.
Let us know if you need further assistance.
Hope the above information helps.
Thank you.