I have a moxa server with windows server 2019 standard edition, OEM license.
Following a reboot, it suddenly no longer recognized the Windows license and asks for activation.
I have tried in various ways, but it does not give me the possibility to reactivate it, because a series of services "Software Protection" "Clien DHCP" are blocked and therefore I cannot surf the internet and reactivate it.
I also tried telephone activation, but SLUI4 gives me an error. Can anyone tell me why it happened and how to fix it?
Could it be due to missing updates?