Hi,
I have the Windows 10 Home 64-bit anniversary update(V:1607, Build 14393.0) installed, which will allow MS edge browser to support add-ons. I see that the MS Edge browser has add-ons option called 'extensions'.
However, when installing some apps(Norton Identity Safe, Internet Download Manager, Skype, HP SimplePass Website Logon, so on) which integrate their built-in adds into any browser installed, I didn't see that add-ons were added/integrated to the MS Edge browser.
However, all of the Norton Identity Safe Extension, Internet Download Manager Extension, Skype Extension, and HP SimplePass Website Logon Extension added/integrated into the other browsers such as MS IE11, and Google Chrome, FireFox and so on.
As a result, I think the add-on of any app only available and authorized in the Windows 10 Store could only be added/integrated into the MS Edge browser.
However, IDSS and Norton Toolbar extensions are not available in the Windows 10 store since I think they are considered 3rd-party extensions.
How to let "IDSS" and "Norton Toolbar" extensions added in the MS Edge.