Where do I clear the list of installed ActiveX

Post by **SMT_SOL** » Mon Mar 02, 2020 11:55 am

I am using WINDOWS 10 After registering the DLL, use the registered DLL in Objects-> Widgets-> ActiveX.
It seems that WinCCOa has an ActiveX list even after releasing the DLL. Where can I initialize

Post by **leoknipp** » Mon Mar 02, 2020 12:20 pm

The list of installed ActiveX elements is read from the operating system. This list is not generated and managed by WinCC OA.
If you want to remove some components please check how to remove an ActiveX in Windows.

Best Regards
Leopold Knipp
Senior Support Specialist

Post by **SMT_SOL** » Tue Mar 03, 2020 12:56 am

Thank you for your kind reply~

Post by **SMT_SOL** » Tue Mar 03, 2020 5:52 am

In the previous answer, I found that the list of ActiveX controls came from the WINDOW assembly. If the WINDOW COM object used by WINCCOA is deleted from the assembly, it still remains in the WINCCOA list.
Can you tell me exactly where WINCCOA gets the list of ActiveX controls to clean that list?

Post by **leoknipp** » Tue Mar 03, 2020 4:11 pm

As written before the information is read from the operating system, in detail from the Windows Registry.
If there is a mismatch you have to check the Windows Registry.

Best Regards
Leopold Knipp
Senior Support Specialist

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Where do I clear the list of installed ActiveX

Where do I clear the list of installed ActiveX

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