: Use a tool like OfficeScrubber to remove all current license tokens without uninstalling the entire Office suite. Now that the certificates and volume keys are in place, rerun your authorized organizational KMS activation script or tool. The error will no longer appear because the system now recognizes the installation as Volume Licensed. Alternative Solution: Complete Clean Reinstall to install the Volume version directly using the Office Deployment Tool? KMS Activation Script for Windows/Office | PDF - Scribd |