Do you get this error when you try to redeem Office 2013 or Office 2016?
"You have reached the maximum number of Office products that can be associated to your Microsoft account."
You can get this error when you’ve redeemed the maximum number of copies of Office to a single Microsoft account. You have a couple of options to work around this.
1 - Create a second Microsoft account
If you want to redeem more copies of Office and you’ve reached the limit, you can create a second Microsoft account and redeem more copies of Office using this second Microsoft account.
Note: When redeeming multiple licenses to a single Microsoft account, there is no central product key management on the My Account page.
2 - Consider volume licensing
Software volume licensing makes it easier and more affordable to run software on multiple computers within an organization.
Please go to the Microsoft Volume Licensing website for more information.