Not Found on Accelerator

We hear you, and happy to assist you with this @Theyoshi99!

Please visit our website about Resolve email issues, which talks about the error you are getting (Accelerator Not Found).

You can try using a different browser or check for browser issues:

• Open AT&T Mail in a different web browser. For example, if you normally use Google Chrome, try Firefox.
• Verify that your browser accepts cookies. If so, clear your cookies and cache. You’ll find this info in your browser's Preferences, Settings, or Options menu.
• Enable JavaScript, and make sure it’s up to date. You’ll find it in your browser’s Settings or Options menu.
• Disable browser tools or add-ons to see if they’re causing issues with email access.
• Enable Adobe Flash Player and make sure it’s updated.
• Check the settings of your firewall, antivirus programs, and anti-spyware software. They can cause a conflict with email programs and web browsers. Disable them one at a time and try to access your email. Don't forget to turn them back on once you know they aren’t causing the problem.

You can also, try resetting your password and check:

1. Go to reset your password.
2. Enter your user ID and the last name associated with your ID.
3. Choose your verification method and follow the prompts.
4. Enter and confirm your new password.

For more information please visit our website about Reset your AT&T Mail password.

For further assistance, we are always here to assist.

Nate, AT&T Community Forum Specialist.

Thank you for thoroughly reading my post.
However I can confidently say there is nothing on my end that I can do to fix this. It is clearly an issue on the server's end.

Hello @Theyoshi99!

We understand that sometimes it could be an issue with the server. However, trying the troubleshooting steps could clear the interference which might be happening with the server. We're here to make things right!

Please try the troubleshooting steps provided earlier or visit our website about Resolve email issues.

You can also speak with our AT&T technical support team. Please contact us at 800.288.2020. 
They are available Monday to Friday 07:00am-09:00pm CT and Saturday-Sunday 08:00-09:00pm CT / Every day 04:00am-01:00am CT.

For further assistance, we are always here to assist.

Nate, AT&T Community Forum Specialist.