I wanted to remove some installed components of Komplete. These were not found in the windows uninstall list. So I deleted the folders. But now they can still be found in Native Access and in Kontakt, you can't get rid of the entries anymore.
No, I didn't do it at first. But meanwhile I found a tool named NI Uninstall RegTool. And I was able to delete the entries in the registry (and some earlier ones)
Do you clear the registry?