- edited 02-22-2019 11:17 AM
AT&T and Yahoo are making your email more secure. The new security implementation, also known as Open Authentication(OAuth), works by encrypting your credentials to better protect them from hackers. During this change, you may have trouble logging into some email applications. Not to worry, there is a solution.
When Will This Happen?
Later This Year.
(You can make the changes now by reviewing our online support page for information and assistance.)
What You Need to Do
If using the web to access your email; nothing as our web experience is already OAuth compatible. If you are already using the OAuth settings within mail you may be directed to re-sign in, and if you are using a non-OAuth compatible application , you will need to upgrade to one of the OAuth compatible apps listed below and select Yahoo as your service provider when you sign in.
Create A Secure Mail Key
To verify your Application is compatible or for additional FAQs and information, visit our support page.
Compatible vs. Non-Compatible OAuth Applications
The applications listed below are OAuth compatible. Note that you are using OAuth only if you selected Yahoo as your provider when you set up your account in the application.
If you use one of the applications below, you need to upgrade to an OAuth compatible application.
· Apple Mail, Outlook Mobile, and the Yahoo Mail app on iPhones and iPads running iOS 9.0 and above
· Gmail, Outlook Mobile, and the Yahoo Mail app on Android devices running Lollipop/5.0 or above
· Apple Mail on Mac running OS 10.11/El Capitan or above
· Windows Mail on PCs running Windows 10
· Outlook 2010, 2013, 2016
· Mozilla Thunderbird
· Windows Mail on personal computers running Windows 8 or older
· Apple Mail/Mac Mail on macOS 10.10/Yosemite or older
ChrisZ, AT&T Community Specialist
AT&T Customer Care
Need help with an account specific question? Post a new question here on the forums by clicking the "Ask a Question" button.
For additional support, please visit us at our AT&T services hub.
Follow us on: Twitter @ATTCares and @DIRECTVService
Solved by: Go to Solution.
02-08-2018 11:22 AM
There are some email changes coming, those changes may affect how you sign in. Not to worry, we have the solution for you above!
ChrisZ, AT&T Community Specialist
02-08-2018 2:24 PM
My copy of Thunderbird, version 52.6.0 (current) has an "OAuth2" option for password authentication. Are you saying that won't work?
03-07-2018 5:13 AM
I can get on the ATT.net home page. But cannot sign in to the email.
When I try it the diagnostic says cannot connect to web server 'cprodmasx.att.com'
What should I try?
03-20-2018 8:58 AM
I have been locked out of my Yahoo email for a week...repeated C/S calls have not helped..very angry...can access att.net, however, att.com login does not recognize my user ID. tried resetting PW several dozen times...same non result. Is anyone at ATT listening???? mgm
03-20-2018 11:20 AM
I am NOT a tech and do not understand all of the things to do. I will visit my local AT&T Store but once again am disappointed in AT&T for its changes requiring the user to fix their problems. All I am trying to do is get my login accepted on my laptop and I do not understand why there is a problem when it is accepted on my phone and tablet...
03-31-2018 6:41 AM
Does AT&T plan to announce or send notifications directly to its users about the April 1st email security upgrade requiring them to take action if they use an email client without OAuth? Posting a "solution" article on the AT&T site and this forum only gets to a handful of users such as myself who stumble on this accidentally while searching for a solution to another issue (the inability to send from firstname.lastname@example.org problem). It would be helpful if AT&T would send an email notice to all of its users/customers with @ATT.com or @Bellsouth.com or @sbcglobal.com and all other email accounts potentially affected by the requirement to sign in to their email client using a new "secure mail key", rather than customers having to call ATT or search online when they are no longer able to receive email after April 1st. Please AT&T, do a better job of enabling your customers to take necessary action to prevent lock out of their email accounts which will create more bad press for you and customer calls.
- edited 03-31-2018 2:42 PM
This article is basically the same as the original announcement. It goes through all this crap about using OAuth and slips in you don't need it with older email clients if you switch them to using a secure mail key (basically a password with a fancy name where you still use your account password just to create it).
Further it still doesn't clarify which OAuth they are talking about. In other words is it OAuth1 or OAuth2? Since the original announcement I've never gotten a clarification of that. OAuth2 is not compatible with OAuth1 and most (all?) email clients only support one or the other and even then there may be problems in the protocol exchanges between the client and server.
04-18-2018 3:17 PM
I, too, have been locked out of my email account. I cannot find support for solving it. Changing the password only resulted in changing the password to the ATT website. I still cannot login to my email account.
Then when you click "help" it offers a link to "contact us". There is no "email" option on the contact page, only choices for the other services (TV, wireless, internet, etc.).
04-18-2018 8:44 PM
Changing the password only resulted in changing the password to the ATT website.
I still cannot login to my email account.
Since you should be able to log into the webmail as I just said is it an email client app (Thunderbird, Outlook, etc.) that's having the problem? You are posting in this thread whose main post addresses accessing email through an email client. If so, as suggested in that first post, try using a secure mail key instead of your account password in your client.
04-18-2018 8:56 PM
No, that was not accurate.
I finally got ATT on the phone, and after about an hour and multiple departments, we got the account unlocked (no, the error messages did not say the account was locked). NOW the accounts are linked. They were NOT previously. NOW I can login to the email account.
I was NOT using an app. I was attempting to login on through the Yahoo! website. I also was unable to login via my mobile phone through the Yahoo! account. I even tried downloading the Yahoo! app, because a relative said that they had to upgrade that app in order to login.
I logged into the ATT website using a username and password, not my email address.
01-11-2019 4:54 PM
This is so not right! I can't sign in to my email!!!!! Makes me want to cancel my ATT service all together. I need my email because I have important emails that need attention NOW!!!