When using the ActiveX controls from a .NET application, make sure that you set the build platform correctly in Visual Studio. To use the 32-bit controls, you must set the build platform to x86. If the developer sets the build platform to “AnyCPU”, and the application is executed on a 64-bit system, then the application will only find the 64-bit controls, it won’t find any 32-bit controls.
If the x86 build platform is not listed in Visual Studio, you can add x86 by selecting the configuration manager from the list and adding the x86 platform.
When developing applications targeting both Intel/AMD x64 and ARM64 systems, it is recommended to use the 64-bit ActiveX Controls and compile your application for the x64 platform.