HELP!

I use W10 as my OS. At the end of last week MS "identified" problems with my computer which it needed to sort out automatically, without my knowledge or consent. After this had been done I was not able to see any incoming emails in Live Mail after 2/12/2015. The error message that comes up says "Could not download messages from the IMAP server" Error ID: 0x800CCC0F. This is disasterous as I rely on the emails for an income and I must have access. 

Can anyone explain to me in plain language and step by step what to do - the help line is useless and has referred me to this community.

John Field

***Moved from Windows / Apps on Windows 10 / Mail/Outlook Mail***