Fixes

Fix Gateway Authentication Failure ATT Now!

You can get the Internet Protocol TV or IPTV service provided by AT&T U-Verse in about 48 American states.

Although people really like it because of its robust and efficient performance, recently, many users have found some problems while they were trying to connect internet using the U-Verse router that says something like ‘gateway authentication failure. Contact your service provider.’

If you have also all of a sudden came across this gateway authentication failure att issue, don’t fright and follow the simple guidelines mentioned below for getting rid of this problem. We have mentioned some efficient solutions that will help you out in eliminating this problem.

What Triggers The Gateway Authentication Failure ATT?

We have received many complaints from different users about this particular issue, so we looked into it and have found a lot of reasons that trigger this problem. A few are:

  • If the router’s configurations get corrupted all of a sudden, then you may find yourself dealing with this problem.
  • If your network equipment is not working, then you can come across the gateway authentication failure issue.

Troubleshooting The Gateway Authentication Failure Error:

Follow the guide given below to eliminate this gateway authentication failure issue:

Solution#1: Do The Hard Reset Of Your Modem

Many people have mentioned that if you do a hard reset of the modem, you can fix this issue. It is probably the most efficient method of resolving the att gateway authentication failure problem. The hard reset is something that makes your device to go back to the previous factory settings. You can simply follow the below-mentioned steps for hard resetting your device. Once it is done, check if the issue is gone or not.

Reset Through Your Router:

  • First off, switch off your router > locate the Reset button at your router’s back.
  • Next, push the Reset button and hold the button for about 30 secs. You can make use of the paper clip for holding the button.
  • When you see all of the router’s router LED lights going dim, simply let go of the button and wait for the device to start again after the reset.

Reset Through Your Browser:

  • First off, click the search button from taskbar > type in CMD. ( Command Prompt )

command prompt

  • Next, type ‘ipconfig’ in the opened window > hit enter for executing the command.
  • After that, simply scroll down until you come across the Default Gateway setting under Ethernet or Wi-Fi.

Default Gateway

  • Then, copy your router’s Default Gateway IP Address and paste that in the web browser’s search bar for launching the Internet Settings.
  • Next, navigate to the Diagnostics section > click on Reset.

Reset

  • Enter the Device Access Code > click Continue.

Device Access Code

  • Now, choose Reset Device.

Solution#2: Enable The Dual-Band On Your Router

These dual-band routers can provide better performance than the routers with single-band by transmitting the two simultaneous wireless signals at 5 and 2.4 GHz. If you have stumbled upon this gateway authentication failure error, then there might be a possibility that such dual-band mode is disabled on your router; therefore, you need to enable this mode by following the below steps:

  • First off, click the search button from your taskbar > type in CMD.

command prompt

  • Next, type ‘ipconfig’ in the opened window > hit enter for executing the command.
  • After that, simply scroll down until you come across the Default Gateway setting under Ethernet or Wi-Fi.

Default Gateway

  • Then, copy your router’s Default Gateway IP Address and paste that in the web browser’s search bar for launching the Internet Settings.
  • From the menu pane on your left side, simply select Wireless > Advanced.
  • After that, locate Band from your right side of the window > set it to five GHz (5 ghz).

5 ghz

  • Then, apply all these changes and wait for a little.
  • Now, restart your router to make certain that it actually works with all the new settings you have made.

Solution#3: Utilize The myAT&T Tool

If the AT&T gateway authentication failure issue is still there and you were unable to fix it by using the above method, then don’t worry.

You can make use of the alternate solution to troubleshoot this problem. AT&T has introduced the myAT&T mobile app that can help the users in locating the error and fixing it without seeking any help from customer support.

This tool can test your service and show some straightforward directions on your screen that you can follow to eliminate most of such glitches.

Solution#4: Run Your System Setup Wizard On AT&T

Your router’s system setup wizard is a GUI that can help you in getting through the step-by-step procedure for doing the difficult tasks related to the router. If you still can’t get rid of this error, then navigate to the system setup wizard and follow the directions on the screen to spot the type of problem. Follow the below steps:

  • First off, click the search button from your taskbar > type in CMD.

command prompt

  • Next, type ‘ipconfig’ in the opened window > hit enter for executing the command.
  • After that, simply scroll down until you come across the Default Gateway setting under Ethernet or Wi-Fi.

Default Gateway

  • Then, copy your router’s Default Gateway IP Address and paste that in the web browser’s search bar for launching the Internet Settings.
  • From the bottom of the window, select run system setup wizard.
  • Then, type in your password > click Submit.
  • After that, follow the on-screen directions until you come across the PPP Authentication > enter all the needed credentials > click Next.

PPP Authentication

  • After typing in all the needed credentials, if still, you encounter this error or no PPP sign-in service located, then get in contact with your AT&T customer support service and explain all the details to them regarding the error you are coming across all the time.

Solution#5: Contact Your AT&T Customer Support Service

If none of the solutions that we have stated above have helped you in getting rid of this error, then you are left with only one option, and that is to get in touch with your internet service provider (ISP) first and ask them about the solutions to get rid of this gateway authentication failure ATT problem.

There might be a little possibility that the MAC address on your new network equipment is not really authorized.

All you will have to carry out is to get in touch with the ISP or internet service provider and explain the error to their representative in detail.

They will, in all probability, send an engineer to you that will try to figure out the error first for you and then make use of the different workaround to eliminate it so that you don’t encounter this error again in the future.

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