Is there a way to convert a machine from KMS licensing to standard Licensing? The machine is question already has office installed that was conencted to a KMS licensing server. The person that is taking that machine has office professional plus with a standard license key. When they try to use office it says that the product must be activated, they select Change Product Key, enter their key but it comes back and says the product key is in valid - enter a valid office key. We checked the typing a number of times and it has been typed correctly, so the answer appears to be the licensing itself.
Does anyone know if there is a way to resolve this without uninstalling / reinstaling office? There are a bunch of addins and linkages to installed software, and I am not sure I want to test the reinstallation and discover that we lose all of those.
Thanks in advance.