Office 2016 has been activated on my PC for four years now, all of a sudden just overnight, it lost ALL activation and will no longer activate. I always receive the following error message in KMS_VL_ALL-38r: "Detected Office 2016 does not support KMS activation... Retail Products need to be converted to Volume first." But it is NOT retail! This is the SAME ISO that worked with KMS_VL_ALL-38r on my other PC just a week ago! Unless somehow, it got converted to retail overnight.