Unless I'm misreading something, you want to use Yahoo Mail as your default email provider (and not Windows Mail).
Unfortunately, Yahoo Mail is a web based service and can't be used as the default program in that way.
Being a web based service, Yahoo Mail can't access your system in the way that an email program (such as Windows Mail) can.
Yahoo Mail runs in your Internet browser (most likely Internet Explorer) and web browsers can't interface with your system the same way that an email program (called an email client) can.
There is a free program that will let you use your Yahoo Email from within Windows Mail. It's called YPops! and is available here: http://ypopsemail.com/
I've been using it for years and it works well for me.
Finally, if you're happy with how the system is handling your Yahoo email - then just ignore the prompt for the default email program. Just remember that when you click on an email link on the web it will usually launch your email client. Either close it and manually send email through your Yahoo account - or install the program I mentioned above and use it to reply to email links.
My browser caused a flood of traffic, sio my IP address was banned. Hope to fix it soon. Will get back to posting as soon as Im able. - John
(my website: http://www.carrona.org/
)**If you need a more detailed explanation, please ask for it. I have the Knack
. ** If I haven't replied in 48 hours, please send me a message. My eye problems have recently increased and I'm having difficult reading posts. (23 Nov 2017)FYI - I am completely blind in the right eye and ~30% blind in the left eye.
<p>If the eye problems get worse suddenly, I may not be able to respond.If that's the case and help is needed, please PM a staff member for assistance.