Q:

ActiveX support in Microsoft Edge

I'm trying to understand the support that exists in the Microsoft Edge browser for ActiveX. I have read on numerous sources (by googling the phrase "activex edge") that this is not supported. 
However.. When I look at the Adobe page at http://www.adobe.com/software/flash/about/ it says that Flash Player is embedded in Edge using ActiveX. 
screenshot here:

What does this mean, is the information on the Adobe website correct?

A:

Custom ActiveX controls are definitely not supported anymore.
Since Flash is a special snowflake and there are still tons of websites which are based on it, it got special treatment and is, officially, "embedded" in Edge in some internal way. Same goes for the PDF reader. It may be that this does, technology-wise, still use ActiveX, but this should be considered an implementation detail and custom controls other than Flash are not supported anymore.
See also https://blogs.windows.com/msedgedev/2015/05/06/a-break-from-the-past-part-2-saying-goodbye-to-activex-vbscript-attachevent/

