As of today 11 July 2016 I'm unable to send or receive messages from/to my live.co.uk account using Windows Live Mail on Windows 10.

Windows Live repeatedly asks me to sign in. I've done this, repeatedly. I've signed out and signed in again. I've sent emails from my browser, but cannot send them from Windows Live.

Any clues?

I'm not impressed that MS cannot make their own software work on their own platform. And before you advise me to switch to Outlook, Outlook is unable to handle my other accounts. That's why I am sticking to Live Mail, which worked ok until yesterday.

I don't need yet more bells and whistles. I just need the basic things to work, efficiently, all the time.