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Saturday, January 22nd, 2022 3:13 AM

Website's Security Certificate Has Expired

I am unable to access my e-mails because every time I try to log in, I receive a message saying the AT&T e-mail website is misconfigured and their security certificate expired 11 days ago. Is there any way to get this fixed? I tried logging in on both Safari and Firefox, but both say that using the website is a potential security risk and won't let me continue to my inbox.

Community Support


231.2K Messages

2 years ago

We can help you get around the certificate error and access your email, paradiseangel312!


Start by following these troubleshooting options:

  1. Try a different email client. For example, if you're using Yahoo! Mail, try using Microsoft Outlook. It's unlikely that you'll get the same error message on two different email clients.
  2. If you're using a computer, adjust the time and date to the appropriate values. One of the most common reasons for a security certificate error is a discrepancy with the device's date and/or time.
  3. Configure the settings for use of email over SSL. There may be a mismatch between the domain name and the shared SSL certificate on the server. To do this, update the settings for both incoming and outgoing servers. Also, make sure your email client has port 465 configured as the SMTP port (which is the email port).
  4. Retype the address. If you've never gotten this error before, test to see if this is a persistent issue by retyping the web address.

Give that a try and let us know if it resolved the problem for you, or if you still get the security certificate error.


Aminah, AT&T Community Specialist

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