Recently, I downloaded Windows Essentials/Windows Live Mail to my new desktop PC and Windows 10 operating system.  I have been successfully sending and receiving my email messages through Windows Live Mail.  (Comcast.net is my default account and is my host email server).  Then, on December 20th, Microsoft sent an automatic update to my new PC.  After downloading and updating my O/S, my Windows Live Mail no longer works.  I cannot send or receive.

I am stumped. 

I cannot send or receive using my @Comcast.net email address

I can send and receive using my @live.com email address