Hey Senkal Suzanna
The move towards 64-bit Office applications means that the older 32-bit ActiveX controls might not play nice. You know, it's all about compatibility and security changes.
In the newer landscape, Microsoft encourages using Office Add-ins and web technologies. The Office JavaScript API is a cool way to extend Office functionality without the headache of 32-bit vs. 64-bit issues. It's the more modern route.
But before you try registering those older files, check if there are updated versions or alternatives designed to work seamlessly with 64-bit Office.
If this helps kindly accept the answer thanks much.