>We have one client with Windows 10 and they're getting a message on the Mere Mortals menu system which uses a treeview control. It says "Class is not licensed for use."
>
>I've found a reference to a Doug Hennig 1998 paper called "Tame Your ActiveX Controls" and in there he says this issue can arise and there's a FOX.REG file on UT that can be downloaded to fix the issue. Don't know if it's still available or if it still works.
>
>Does anybody have any guidance to correct / workaround this issue?

If you still want the file, here's how to create it:

Text to lcText NOSHOW 
REGEDIT4

[HKEY_CLASSES_ROOT\Licenses\DB4C0D00-400B-101B-A3C9-08002B2F49FB]
@="mgkgtgnnmnmninigthkgogggvmkhinjggnvm"

EndText
StrToFile(lcText,'fox.reg')