You can also simply uninstall Microsoft Office and then re-install Office to enter a new product key. But, if the same task can be done by uninstalling only the product key, then it is better than removing the entire Office product.
Uninstall Microsoft Office product key
You can uninstall the Microsoft Office product key using Command Prompt, as follows: First of all, open elevated CMD or Command Prompt. Access the Microsoft Office folder in Command Prompt window. For that, you need to execute a command that will include the path of the MS Office folder where it is installed. For example, if a 64-bit version of Microsoft Office 2016 is installed in C Drive, then the command would be:
You have to check by yourself where and which version of MS Office is installed and then execute the command accordingly. Now run the command to check the last 5 characters of the installed product key of Microsoft Office. The command is:
You can see the license status (activated or not) as well as the MS Office key’s last 5 characters. Copy those characters. This is the final command for uninstalling the current product key. The command is: Replace ABCDE with the last 5 characters of MS Office key and execute the command. It will uninstall the Office key. When you will open Word or some other Office apps, it will prompt you to enter a product key. Also read: How to deactivate and uninstall Windows Product Key. Hope the steps covered in this post will be helpful to easily uninstall or remove the Microsoft Office product key. TIP: We recommend that you also read our article on Where and How to Buy Microsoft Office?