Blinking Blue Light on Xfinity Router: Troubleshooting & Solutions

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A helpful guide to identify & troubleshoot all blinking blue light issues
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Is your Xfinity router blinking blue? Newer devices from Xfinity can use WPS so you can connect easily and quickly to your router without needing to input the network name and password. The blue light on your router will stop blinking as soon as you connect wirelessly, but if you can't connect or the blue light doesn't stop flashing, follow the steps in this guide to troubleshoot it.

How to Fix an Xfinity Router That's Blinking Blue

An Xfinity router that's blinking blue usually indicates that it's trying to establish a wireless connection. You can check your paired devices for anything that's trying to pair, re-pair, and check the cables coming out of your router/modem/gateway.

Section 1 of 5:

Blinking Blue Meaning

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  1. A blue light will begin blinking when the WPS button is pressed, which can be on purpose or not. After about 2 minutes with nothing attempting to connect, the blinking should automatically stop.
    • However, if you attempt to connect and fail, the light will blink for another 5 minutes. You can't try again to use WPS until the blinking stops.
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Section 2 of 5:

Common Fixes & Troubleshooting

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  1. Since the blue blinking light indicates a wireless connection issue, you need to see if something (a smart lightswitch, a camera, or anything else on your network) has lost connection and reconnect it if you can.
    • Something, like decor, might be pressing the WPS button to make the blue light appear.
  2. The cables should be tightly attached to the wall and your modem; loose coaxial cables can lose data, and a loose power cable can provide insufficient power.
    • If there are any splitters between your modem, router, and the coaxial port on your wall, make sure all the cables entering and exiting the split are snugly secured.
    • Also check that the pin inside the coaxial cables is straight. A bent pin indicates damage and prevents internet connection.
    • Replace any damaged cables.
  3. An overall internet outage or maintenance outage can cause your router to blink.
    • Call the local ISP office to see if there's an outage; you can also check their website or your app for additional information.
  4. A random glitch can cause the blue light to appear, and restarting it can be an easy fix!
    • To restart, unplug the modem/router/gateway's power from the wall for a few minutes, then plug it back in.
  5. Confined spaces have poor ventilation, which can cause your router/modem/gateway to overheat. Your device will blink blue or any other color to indicate that it's overheating. It's best to place your Xfinity device in an open area, off the ground.
  6. Doing so removes all personalized settings, like if you changed the network name/password.
    • To reset it to factory settings, look at the back of the modem and press the recessed "Reset" button for a few seconds.
  7. Outdated software causes many issues, like a blinking blue light. You can generally update the firmware by opening the app provided to you by Xfinity. Alternatively, go to their website, log in, go to System Settings in your router/modem/gateway's admin interface, and look there for a firmware update.
  8. Since the blinking blue light indicates wireless connection issues, maybe it functions ok with a wired connection. If you can, connect an Ethernet cable from your router to your computer.
    • If your computer immediately connects to the internet, you know that something is wrong with the wireless component of your device.
    • If your computer does not connect to the internet, you know something is wrong on Xfinity's end.
  9. In some cases, you can't fix the blinking blue light yourself and need help from Xfinity. Your router might be damaged beyond repair and Xfinity could issue a replacement.
    • This is especially the case if you've had the router/modem/gateway for a few years. It might be time to replace it.
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Section 3 of 5:

Light Meanings

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  1. Here's a chart of what the lights on your Xfinity devices mean:
    Understand the Lights on an Xfinity Modem
    No lights
    Your modem is off
    No action needed
    White or white/purple light - Steady
    The modem is on after activation
    No action needed
    White or white/purple light – Blinking
    Modem is on but not yet activated
    Fix: Complete new Xfinity account setup [1]
    Red light - Steady
    No internet
    Fix: Your internet service is down (contact Xfinity)
    Blue light – Blinking
    WPS mode is on (you pressed the WPS button)
    No action needed – just connect a new device to Wi-Fi if desired.
    Orange, yellow, green , and other blinking lights
    Your modem is trying to connect
    Fix: If 15 minutes pass and still no connection, power cycle your modem, then contact Xfinity if needed
Section 4 of 5:

Setting Up Wi-Fi with Push Button Configuration

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  1. Do this to quickly connect something like a printer or scanner to your network .
  2. You must press these buttons within 2 minutes of each other.
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Section 5 of 5:

What if WPS isn't working?

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  1. You can do this a few different ways:
    • Using the app: Go to the Wi-Fi tab and select WiFi details > Edit WiFi settings and change the Wi-Fi network's name and password. Tap Save when you're done.
    • The admin tool (only users renting XB2 or XB3 devices): Go to http://10.0.0.1 and log in. Go to Gateway > Connection > WiFi and change the network's name and password. [2]

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      References

      1. ↑ https://www.xfinity.com/support/articles/xfi-gateway-led-lights
      2. ↑ https://www.xfinity.com/support/articles/wifi-change-admin-tool

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