Hello there,
You should check if this OCX requires some dependent DLL files that are missing. (Perhaps you can use some tools like Depends, Dependencies or DUMPBIN to check the dependencies).
The below thread discusses the same issue and you can try out some troubleshooting steps from this and see if that helps you to sort the Issue.
LED.OCX / Windows 11 https://learn.microsoft.com/en-us/answers/questions/1006172/ocx-issue-with-windows-11-pro-verses-windows-11-ho.html
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