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Mon, Apr 6, 2020 8:55 PM

SAML 2.0 authentication blocked

I am trying to access into corporate server like

and it is timing out, when I tried over my cellphone data, it worked. Seems like router is blocking it, any ideas?


Brand User

New Member


120K Messages

2 months ago

We've got your back, @vipinmittal09.


To bypass this error, begin my resetting your password. Once you've done that, create a secure mail key. Please have your User ID and password ready to sign in to myAT&T.

  1. Go to Profile> Sign-in info.
  2. Select the email account that you want to get a secure mail key for. (You’ll find a drop-down menu at the top if you have multiple accounts.) 
  3. Scroll to Secure mail key and select Manage secure mail key.
  4. If you have more than one email address, select the one you want to use.
  5. Select Add secure mail key.
  6. Enter a nickname for the secure mail key to make it easier to recognize.
  7. Select Create secure mail key.
  8. Select Copy secure mail key to clipboard. (Jot down your secure mail key, so you have it handy if you have to update an email app on several devices.)For security purposes, the secure mail key only shows until you select OK
  9. If you lose or forget the secure mail key, you can create new secure mail keys as needed.
  10. Select OK.
  11. Go to your preferred email app and replace the existing password with your secure mail key. (For an IMAP account, delete the existing password for both the IMAP and SMTP servers and replace them with your secure mail key.)

Please let us know if this is helpful, we are always here and happy to help.


Ariel, AT&T Community Specialsit

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