Windows activation product id not available

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On a Windows 10 client that has been activated with KMS : here is the output of ospp.vbs /dstatus : C:\>cscript '%ProgramFiles(x86)%\Microsoft Office\Office16\OSPP.VBS' /dstatus My problem is that the Office 2016 won't activate event though their CSVLK key is installed on the KMS server. My clients use DNS to discover the KMS server. I have a Windows 2019 KMS server that is currently activating Windows 10 clients and Windows servers.