Recently we had moved some onpremise Server 2016 machines to Azure using ASR. When trying to activate them using the Microsoft steps

• cscript c:\windows\system32\slmgr.vbs /dlv
• cscript c:\windows\system32\slmgr.vbs /ipk WC2BQ-8NRM3-FDDYY-2BFGV-KHKQY
• cscript c:\windows\system32\slmgr.vbs /ato

It did not work, we had to use Automatic Virtual Machine Activation (AVMA)

1. slmgr /ipk C3RCX-M6NRP-6CXC9-TW2F2-4RHYD