Dude4's solution worked for me as well, but I don't want to go through this process for every sign in.
I suggest everyone who has a problem fill out a comment card, since apparently there are no other complaint forms to fill out. The comment card can be accessed via the 'Contact us' page, or https://customer.comcast.com/contact-us/ and click on '[+] website feedback' at the bottom of the page. Of course, I gave the lowest rating possible since something as making an online payment had gone from 5 minute to 1 hour. Thanks for the memories, Comcast. Let's not do this again next month.
After spending the last 3 days trying to login and most of last night and this morning on the phone with Comcast, I decided to attempt login again ... lo and behold to my surprise, I was directed to a screen allowing me to choose to keep my original longtime login info (non-Comcast email) !! Fancy that !
I'm sorry to all of you for the trouble here. This was an error on our side that our engineers were able to isolate and resolve last night. If you continue to have trouble logging in, please clear your cache/cookies/history and they try again. If you are still have trouble after this, please email our team at
We_Can_Help@comcast.com with a copy of your post here, the service address, and the user ID you use to log in.