Third, and final step is finding your unique KMS server key on the Volume Licensing Service Center (VLSC) and adding it to your KMS server. Note: for Windows 8.1 or Server 2012 R2 there are some pre-reqs before you can install this Windows Update / Hotfix. KB3058168 Installed on your KMS server.Windows 8, Windows 8.1, Windows Server 2012, or Windows Server 2012R2 with the Volume Activation role installed.Second there were a few pre-requisites for your KMS Server: Obviously, these are not your unique KMS Server Keys, finding those was the trickiest part and I’ll go over that in step 3. For anyone trying to use Windows 10 KMS Activation with their existing KMS activation server, here are the steps I had to follow to get it up and running.įirst, if you haven’t already entered the KMS Client Setup Key for your version of Windows 10, here are the published client keys.