Assume that you run the Volume Activation Tools wizard in order to install a Microsoft Office 2013 Key Management Services (KMS) host key on a computer that is running Microsoft Windows 8. In this situation, you receive the following warning message:
This will uninstall the existing product key on the KMS host and install the one that you've entered. Do you want to continue?
Note The existing Windows KMS host key will not be uninstalled if you click Yes.
You can install multiple KMS host keys of different products on a computer.