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    • Check for network outage from AT&T. Check for any outages or scheduled maintenance using the Smart Home Manager (app or web). You can also go through the AT&T outages page and search for your area via ZIP code or by signing in with your account.
    • Look for damaged or loose cables. A common reason for the blinking red light issue on AT&T routers is broken cables or loose connections – especially if the light is blinking slowly (1-2 blinks/second).
    • Do a power cycle. If all the cables, ports, and connections are good to go, there is a big chance your AT&T router has a software glitch. This can be quickly cleared through a power cycle.
    • Reduce the load. You can also get the blinking red light on AT&T router if more devices are connected to it than it can handle. You can check how many devices your router supports by going through its specifications.
  1. May 11, 2024 · Loose or damaged cables are a common reason for the blinking red light. Inspect your router’s cables for breaks, damages, and loose connections. Ensure the connectors firmly fit in their...

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    • The Savvy Professor
  2. Dec 7, 2022 · Red: The gateway or power supply may be malfunctioning. Try rebooting your gateway to fix it. Learn how to diagnose installation and connection issues with your Wi-Fi gateway. The following chart explains each status light and what it means. The power is on. The gateway is starting. There’s a software update in progress.

    Status Light
    State
    Description
    Power
    Green
    The power is on.
    Power
    Flashing green
    The gateway is starting.
    Power
    Amber
    There’s a software update in progress.
    Power
    Red
    The gateway or power supply may be ...
  3. Sep 12, 2024 · Red (blinking fast): The gateway has too many devices trying to pair or it’s restarting. Red (solid): WPS pairing failed. You can try again or connect with your Wi-Fi® name and password.

  4. Mar 13, 2023 · Fast flashing green: The gateway is trying to obtain an IP address. Slow flashing green: Our network isn't responding, the gateway is configured incorrectly, or there's an authentication failure. Solid red: Internet service authentication has failed.

  5. Jun 5, 2024 · To fix the AT&T router blinking red issue, you can first restart your router and check for network outages. If the issue persists, you can factory reset your device and set everything up again. You can also contact tech support from AT&T for a replacement.

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  7. To resolve this, start by checking for local service outages. If no outage is reported, try rebooting your gateway by unplugging it for a few seconds and then plugging it back in. If the problem persists, contacting AT&T customer support is recommended for further assistance.