This message was deleted.

are you using fslogix?

Nope, cpm. The package just doesn't register on login. Nothing in the start menu.

Even though you dont have fslogix read the comment here. Some are having issues with CPM as well. https://techcommunity.microsoft.com/t5/fslogix-blog/announcing-fslogix-2210-hotfix-3-preview-2-9-8716-30241/ba-p/4001561

I guess the Missing API gives it away in Server 2019.