Regarding notes.ini parameter "NOTES_PLUGIN_DEFAULT_BROWSER" for ICAA/HCAA, it supports the following value currently.
(For Microsoft Internet Explorer)
However, it does not support Microsoft Edge (both Chrome-based and non Chrome-based) and Google Chrome.
Especially, in case of MS IE, Customers new Windows 10 PC will not have MS IE installed on it, because MS IE will be end of support in the not-too-distant future.
So, "NOTES_PLUGIN_DEFAULT_BROWSER" should support Microsoft Edge.
And also, the same support should be provided for Google Chrome.