My email address keeps changing due to problems at Comcast. I thought I had the problem solved when I deleted Outlook and it worked okay for a month or more but now it is back again. Comcast refuses to admit that it is their problem even though hundreds of people have complained over the last several years. The problem is that Comcast rejects your log in info when you try to send a message. You can receive email just fine but cannot send until they reset their server which is once every day or two. Now that I think about it MS just did another major update and I wonder if they reloaded Outlook again? Now I get to spend another few hours trying to solve the problem again.