You are asking about competing companies. But on your part you have to go over your WLM settings again to see where it fails. This is on the web so here's one link of many.
A few days ago my logon failed when trying to access gmail from my Windows Live Mail software with Internet Explorer on my desktop. I can access it from Chrome on my desktop, as well as from my cellphone or tablet.
I get Windows Live Mail error ID 0x800ccc0f.
I don't know what is going on.