Question about Outlook Express

Just finally did the free upgrade to Windows 10 from Windows 7.  I had been using Windows Live Email 2012 and it worked fine in Windows 7.  Now in Windows 10 it seems to connect fine and pulls email down from my Comcast server, but anytime I try to Reply to, or Forward, or create a new email, I get the same error message:

I did not knowingly change any account settings and looking at them seems like they are the same as they have always been.  Any help that will maintain all my existing files and folder structure would be greatly appreciated.

Thanks!

Just finally did the free upgrade to Windows 10 from Windows 7.  I had been using Windows Live Email 2012 and it worked fine in Windows 7.  Now in Windows 10 it seems to connect fine and pulls email down from my Comcast server, but anytime I try to Reply to, or Forward, or create a new email, I get the same error message:

I did not knowingly change any account settings and looking at them seems like they are the same as they have always been.  Any help that will maintain all my existing files and folder structure would be greatly appreciated.

Thanks!

I use windows live mail and can't stop junk mail. It also comes from UE. When junk arrives it goes straight to my in box and nothing is diverted to my junk folder and there email address is changed each time, Have tried blocking, no luck there and have my option set at high trying to control this junk but they keep coming. If you have a solution please don't get to technical as I am not very tech savy. None of us old farts are. Any help you can give will be greatly appreciated.

Thanks Kaid