How to fix Outlook Email Username and Password Popup for ATT SBCGlobal and Yahoo with Secure Mail Key

Outlook Email Username and Popup

AT&T email account are requiring a Secure Mail Key. This is an "App Specific" Password meant to help with account security. If you are unable to get new Outlook Emails and seeing the Username and Password popup (see screenshot to the right) check the below steps for generating a Secure Mail Key (Also known as an "App Specific Password").

How to Fix Username and Password Popup for AT&T & SBCGlobal Emails with Secure Mail Key

AT&T now requires Secure Mail Key. Use the following steps to generate a secure key to resolve the Outlook Username and password Popup

Sign-in to your MyAT&T Account. Click Here for the Sign-in Page.
Select Profile and select Sign-in info.
Scroll to Secure mail key and select Manage secure mail key. (If you have more than one email address, select the one you want to use.)
Select Add secure mail key.
Enter a nickname for the secure mail key to make it easier to recognize.(IE, if this is for Outlook, enter Outlook).
Select Create secure mail key.
Select Copy secure mail key to clipboard and click Ok. (You should also write this key down for later use).
Return to Outlook and in the Popup asking you to enter your Password, enter\paste the Secure Mail Key and click Ok.

Note: If you lose or forget the secure mail key, you can create new secure mail keys as needed using the same steps.

How to Fix Username and Password Popup for Yahoo Emails

AT&T now hosts Yahoo emails, but you can also get a Yahoo Secure Key (App Specific Password) directly from Yahoo using the following steps:

Sign-in to your MyAT&T Account. Click Here for the Sign-in Page.
Select "Generate App Password"
Choose "Outlook Desktop" and select "Generate".
Copy the App Password and close the App Password popup. (You should also write this key down for later use).
Return to Outlook and in the Popup asking you to enter your Password, enter\paste the App Password and click Ok.