[Blind-sysadmins] Re: activation windows server

hi. well when try my windows key which i found in belark advisor then copied to noetpad. then saved, then looged into the remote server. then says cannot activate your copy of windows. make sure you are connected to the internet. when i go to trouble shoot. and a admin inside hyper v windows server. no option to trouble shoot trouble shooter. is there a trouble shooter for this windows server 2019 essentials. annoying, keep getting that popup message. have tried googling that and tried using the mst command, or maybe need to do a dism. very odd. and using nvda. thanks.