Troubleshooting Your AT&T Internet Connection

by Jones David

AT&T is one of the biggest names in internet connectivity and telephony. However, like any other service provider, they have their fair share of problems. Downtimes, service outages, and connection issues are some of the challenges that AT&T customers face regularly.

If you cannot access the internet, but your Wi-Fi says it is connected, your modem or router firmware could be outdated. Service outages, IP address conflicts, faulty cables, incompatible devices, and DNS cache glitches are other possible reasons for a malfunctioning Wi-Fi connection.

Not having an internet connection when you need it the most can be an annoying and frustrating experience for anyone. Fortunately, we are here to help. 

The following are a few tips on how to fix your AT&T Wi-Fi connection quickly and effectively.


Reboot Your AT&T Modem or Router

The first step to troubleshooting and restoring your AT&T Wi-Fi connection is to reboot your modem or router. Trust us. This fix usually works 99 per cent of the time.

Rebooting or resetting your AT&T modem or router will automatically reconfigure incorrect settings and fix small issues causing your Wi-Fi not to work.

Here are the steps:

  1. Unplug the power cord from your modem or router
  2. Wait at least 60 seconds to elapse (if possible, wait for 2 minutes)
  3. Plug back the power cord to your device
  4. Please wait for the modem or router to boot (it might take up to 10 minutes)
  5. Check if this resolves the issue

Reboot Your Computer or Smart Device

Another quick way to fix AT&T Wi-Fi connection issues is to restart your computer or smartphone. If your Wi-Fi router indicates a connection, but you cannot access the internet, the problem could be with your PC or Android.

Rebooting your computer or smart device after long hours of use can restore your wireless connection and ensure optimum performance.

Here are the steps:

  1. Turn off your computer or smartphone
  2. Wait at least 30 seconds to elapse (if possible, wait a full minute)
  3. Turn on your PC or smartphone
  4. Allow it to boot as usual
  5. Verify if this resolves the issue

Note: If rebooting does not solve the problem, consider resetting your device. Here are the steps:

  1. Resetting your PC
  1. Right-click the start button
  2. Click Settings
  3. Click Update & Security
  4. Select Recovery
  5. Under PC Reset, click Get Started
  6. Verify if this resolves the issue

     b. Resetting your smartphone

  1. Go to Settings
  2. Tap Backup and Reset
  3. Tap Reset settings
  4. Reboot your phone
  5. Verify if this resolves the issue

Check Your Wireless Settings

If your AT&T Wi-Fi is connected but not working, consider checking your wireless settings for incorrect configuration, conflicting IP addresses, or even cluttered DNS.

For incorrect wireless configuration, consider resetting your Wi-Fi router. Here are the steps:

  1. Unplug the power cable from your router
  2. Wait a full two minutes
  3. Plug back the power cable into the router
  4. Verify if this resolves the issue

Here are the steps to reconfigure your IP address and clear DNS:

  1. Click the Start Menu
  2. Scroll to Windows System and click to expand
  3. Right-click Command Prompt and select Run as administrator
  4. Type ipconfig/release and press ENTER
  5. Type ipconfig/renew and press ENTER
  6. Type ipconfig/flushdns
  7. Press Enter
  8. Type Exit 
  9. Reboot your computer

Update AT&T Wi-Fi Gateway Firmware

If you are using an old and outdated AT&T router or gateway, you may have issues with Wi-Fi connectivity. The gateway’s firmware may not be compatible with the latest wireless network technology. If this is the case, you may have to update the firmware.

Here are the steps:

  1. Open a web browser
  2. Type http//att.wirelessinternet in the address bar (or the default IP address) to log in
  3. Enter your login credentials
  4. Select AT&T Software Update
  5. Click Check for Updates
  6. Download and Install the Update
  7. The device will automatically start after the update is complete
  8. Verify if this resolves the issue

Note: The position of your AT&T gateway is equally important to guarantee optimal Wi-Fi connectivity. Ensure the gateway is away from distractions and in a central location to boost signal strength.

Check Your Cables for Damage

Faulty or damaged cables can also cause your AT&T Wi-Fi not to function appropriately. You, therefore, need to check all physical connections between your gateway and other related devices are working as expected. These include Ethernet cables, power cords, and phone lines.

You can unplug all cables and plug them back in one by one. Ensure you connect each cord to the correct port firmly and securely. Also, replace all faulty or damaged cables immediately to restore your Wi-Fi connectivity.

Avoid using third-party routers and equipment that are incompatible with AT&T. You can check here if your modem and router are compatible with AT&T service.

Check Your Firewall Settings

A firewall is a network security filter between your computer and incoming or outgoing internet traffic. It monitors your network security to help prevent malicious activities and unauthorized access.

Even though your firewall is a vital security program, it can sometimes affect or even disable your Wi-Fi connection without your knowledge. This is particularly true if you run multiple firewalls on your device simultaneously.

Always ensure you run only one firewall, preferably Windows, to prevent conflicts and erroneous Wi-Fi disconnections. You can also disable your firewall temporarily to check if it is the cause of the issue.

Scan Your Device for Viruses

Viruses and spyware can also cause your AT&T Wi-Fi connection to fail. If your notice your device has become painfully slow and you cannot access the internet, consider scanning it for viruses.

Update your computer to the latest version of the Operating System to prevent viruses from usurping system resources and causing internet connectivity issues. You can also purchase the latest antivirus programs to protect your PC from threats.

Clear Your Browser Cache

Sometimes your browser could be the root of the problem. Try using a different browser to see if that will resolve the issue. If the problem persists, clear your browser cache.

Here are the steps:

  1. Open your preferred browser
  2. Click settings
  3. Click tools
  4. Click Clear browsing data
  5. Select the time range
  6. Check the boxes marked cookies, cached images, and files
  7. Click Clear data

Check for Service Outages in the Area

AT&T usually conducts scheduled maintenance to improve its services and guarantee continuous connectivity. If you missed the latest service update, you could visit the AT&T website to check if there is a service outage in your area.

Contact AT&T Customer Service

If you’ve tried everything and nothing seems to work, consider calling AT&T customer service for assistance. The company may send a technical team to your area if the problem affects several customers. Sometimes it could be a missed payment, and that’s why you’ve been disconnected. They may also advise you on what to do to restore your internet connection. 


As you can see, fixing “AT&T Wi-Fi connected but not working” does not have to be complicated. You only need to try out any of our proven fixes as described above to restore your internet connection. You will undoubtedly get back up and running within no time. 

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