I checked the C:\Windows\SYSWOW64\ and C:\windows\system32\ directories for the .OCX file and its not listed
Then it is normal that this message is displayed
The .OCX must be registered as Admin with regsvr32
This .OCX is very old
You can put it in the executable directory, then register it from there (easy to find from Google if you don't have it locally)
(BTW, why a Tag windows-uwp-runtime ?)