Since Server 2019 Essentials has removed client back up, I like to upgrade from server 2012 essentials to 2016 Essentials with a SLP/slic 2.4 bios? Googled for hours; but there seems to be no such bird (found one for standard/datacenter). If someone can direct this poor soul, many thanks.
I'm not pretending to be a helper in this case, I don't know much about activating servers, but there is one page (topic) in this forum, maybe some help with that. https://forums.mydigitallife.net/threads/windows-server-2016-oem-slp-keys.75889/
So far no SLP keys for Server 2016 Essentials. edit: My mistake I was referring to Server 2019. Not sure about Server 2016 Essentials. Here is the link for Server 2016 SLP keys: https://forums.mydigitallife.net/threads/windows-server-2016-oem-slp-keys.75889/
Really looking for Essential due to client backup; which is present in 2012 and 2016; not in 2019. I guess I'm stuck in 2012, a good year to remember. Head down
I found a KMS key somewhere around here that worked for my testing. Then I just bought a license from MS for my long term use. Image is w/ the KMS key
I know, but KMS_VL_ALL would simply have activated it. The OP seems to want to use the slic+cert+oem:slp key, don't know if it works for essentials, not seen an oem:slp key for it.