Hi, I'm Elise, an independent advisor and I'd be happy to help with your issue.
Windows Live Mail has been out of support for about 3 years now, unfortunately feature update can break features of this application due to this.
I would suggest using the built in Windows 10 mail app to add your email accounts to.
For further information please see this article:
https://support.microsoft.com/en-gb/help/18614/...
Kind Regards,
Elise