Looks like KB5030279 or KB5030278 breaks KMS on windows server 2012. Can anyone else confirm this?
I get this when running /dli command and bottom right of wallpaper has windows logo (which appears when you are not licensed)
C:\Windows\System32>cscript slmgr.vbs /dli
Microsoft ® Windows Script Host Version 5.8
Copyright © Microsoft Corporation. All rights reserved.
Error: product key not found.
MS case 2309130030005607 opened.
It would appear that September maintenance for 2012r2/2016/2019/2022 is not affected.
If I peel off KB5030279 or KB5030278, KMS functionality is restored.