Suddenly cannot access secondary email

Following this, Doc59... in the same boat, although I just started the process. Not sure if I have been hacked or if an issue on their end. The solution so far is the same - "advanced support" will help me in 24 hours (guess I shouldn't hold my breath).  She did try to sell me xFi Complete. Said having that would protect me from my current issue? My reply was, please resolve my current issue before I consider giving Xfinity any more money. Sorry not helpful, hope they fix it for both (all) of us soon.

I’m having the exact same problem Re: Suddenly Cannot Access Secondary Email (Comcast).

On May 28, 2024 @ 7:30am I received my last email in my secondary account Inbox.  On the Xfinity email page, there was a black triangle next to my secondary email folder indicating an error.  If clicked, it displayed this message: “The entered credential or authentication information does not work or are no longer accepted by Provider.  Please change them.”

If you try to edit the account, it is not permitted.  Website suggestions to use the “Reset Your Password” screen don’t work’.  Updates to secondary emails are not allowed. Message stated “Validation of server imap.comcast.net failed due to invalid credentials.”

Also suggestions that you can log into the Primary account and make updates to secondary settings are no longer possible (assuming they once were).

Note that the primary account is fine.  Unfortunately, 90% of my emails are in the secondary account.  I’m in a panic that I no longer can see the bulk of my email.  Senders will not know I am not receiving their emails.

As suggested by their website, I did update the Primary password on the Primary acct, but it had no impact on secondary emails.   I have been unable to get resolution from Xfinity, but it appears not to be isolated.

I have not made any changes to my Comcast email in months.  I suspect that Xfinity made a security change around May 28 that is causing this.   6/2/2024

Same issue here...secondary email accounts have gone dead. C'mon XFinity....we are depending on you and you obviously did something which turned these off.

The two secondary accounts on my end, are used each day. I noticed that Users are no longer able to add secondary emails...which is also really bad news. If that is the case, it could be related to our lost access. Please help us!!!

I have the same issue! My secondary email accounts give me the message"The entered credential or authentication information does not work or are no longer accepted by provider. Please change them." Change WHAT? Xfinity, what did you change? How can I resolve this so I have access to my email?

Most likely have to change your password within your main account for this issue to be resolved.    Xfinity puts your account on a block if you don't change email password very often.

I am having the same issue as of July 11, 2024.  My daily most used Comcast email address on our Comcast account suddenly stopped sending any email to my Apple devices, and no messages show up when I access my mailbox at "connect.xfinity" either ... matter of fact there are none of the normal subfolders like inbox, drafts, trash .... only a message on the screen that says empty. I'mm getting email in my main email address and another Comcast email address but not the one I use most.  The odd thing is that when I send an email to the problem address it does NOT bounce back, which means it is being sent somewhere .... just no where that Xfinity can identify. 

After not being able to access with my old password I tried changing the password for the problem email address and still get the "Error. The provided login data to access mail server imap.comcast.net seem to be wrong. Please correct them."  I've gone through every relevant FAQ on the site.

So out of the blue only this one email account stops working and unfortunately some sites that I access that uses this email address want to send a verification code to the email account that I cannot access.  When I talk to the vendors I'm told that I have to contact my service provider.  When I contact my service provider I cannot get this straightened out and never get to talk to a person that listens to the steps I have already taken.

I've had this email account with Comcast since we first got our cable modem over twenty years ago and haven't had a problem with any of the email accounts, but now when I actually need customer service?

Come on, Xfinity, you created a problem and make it [Edit: Language] to get it solved.

Same issue.  But with only 1 of my secondary addresses (which I have used for years).  Cannot find help anywhere.  All the settings seem right, and worked fine just a few days ago.  Can still access the email through the web.  But what a nuisance

Back to square one  Once my initial problem was solved a different secondary email started the same problem  Time to call CSA again unfortunately. Honestly, Xfinity causes their own headaches.