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Xfinity from Comcast continues to be one of the most popular ISPs in the U.S. for multiple reasons. Ready access in 36 states. A wide variety of residential services that range from high-speed internet, Cable TV, and digital home phone to home automation and smart security. Popular bundle deals at discounted bundle rates. And epic use of advanced and innovative technology in services and products. All of that and more, put together make Xfinity a household name across the U.S.

While Xfinity utilizes the best technological expertise, and its products are many notches above the competition, even the best hardware can act out of line at times. So if you are trying to find out why the white LED on your Xfinity xFi Gateway comes on and blinks, read on.

Our article today talks about all that you need to know in order to resolve the issue. The steps you’ll need to take do not require you to be tech savvy. Just follow the logic of the process, and you’ll soon be done.

What do the lights on your xFi Gateway mean?

The xFi Gateways from Xfinity (Advanced & 3rd Generation) have a few LED lights which act as indicators, and their behavior is linked to the status of the device. Here is a quick rundown of the various lights and the corresponding device status.

  • No light indicates the device is off.
  • Steady white light or white light with purple tint means the device is on and fully operational.
  • Blinking white light or white light with a purple tint means the device is partially operational.
  • A steady red light means there is no internet connection.
  • Blue blinking light means the device is in WPS Mode.

Largely speaking, all other color combinations may come on when the device is connecting to the Xfinity systems.

How to fix the white light issue with Xfinity xFi Gateway

As you can see a steady white light or white light with a purple tint does not necessarily indicate a problem. When it comes on all it indicates is the device is powered on and operational. If however, you see it blinking, it is likely there is an issue related to the device activation process, and the xFi Gateway is therefore only partially operational.

To fix the issue you must run through the activation process, and complete it. Chances are the activation process did not run its course, or perhaps it did not run right. Keep in mind, you can activate your Xfinity xFi Gateway in 2 ways, either via the Xfinity app or web depending on whether you are using a pre-installed xFi Gateway setup or you have self-installed it. Just so you are on the right track, let’s outline the steps involved in the process.

Activate the Xfinity xFi Gateway via the Xfinity app

The Xfinity app is one of the handiest features of your subscription. From account management and billing, managing your services and keeping track of tech appointments, getting customer support, and ready access to troubleshooting devices. The Xfinity app makes it flexible and convenient to stay on top of your Xfinity service(s).

Once you have set up the xFi Gateway, and it is all ready to connect to the Xfinity network, you must activate the device. A gateway device that has not been activated is likely to show you a blinking white light when you power it up. So let’s get on with it:

  • Download the FREE Xfinity app for your Android or iOS device from Google Play or the App Store.
  • Launch the app and sign in with your Xfinity credentials. If you have not set up your credentials yet or have forgotten, click on the relevant link.
  • Look for the QR code you see at the bottom of the side of your gateway device. The app will prompt you to use your phone’s camera and scan the code to identify your device. Focus on the QA code with the camera. When successfully scanned you’ll see a green checkmark. If however there is an issue with scanning, do it manually. Use the 12-digit CM Mac number printed on the bottom or side label on the gateway device.
  • Next, the app will give you tips on where to place the gateway device, connecting and powering it up.
  • When prompted, enter your WiFi network name and password. Be sure to choose what you can easily remember.
  • Now, wait. It may take up to 10 minutes for the gateway to activate, and once the process is complete you will be notified by the You’ll also need to reconfirm your new WiFi network info.

Once the Xfinity xFi Gateway is up and running, you’ll need to connect all your wireless devices using the WiFi network name and password that you entered during the above process.

Pro Tip: If you are not prompted to start the activation process as soon as you sign into the app, navigate to the Overview tab and select the Account icon. Next, go to Devices and click on Activate xFi Gateway or Modem to start the process.  

Activate the Xfinity xFi Gateway via web

While it is much more convenient and quick to activate your xFi Gateway via the Xfinity app, if you are in an apartment with a pre-installed xFi Gateway, you can activate your device here. All you will need is your Xfinity ID and password to log in. Once you enter your Xfinity credentials click on Next and follow the on-screen prompts to complete the process of activation.

More tips to fix the white light issue with the Xfinity xFi Gateway

While it is very likely the white blinking light issue with your Xfinity xFi Gateway will get fixed once you have run the activation process successfully, just in case that does not fix the problem, here is the oldest trick in the book. Restart your xFi Gateway!

Restart your Xfinity xFi Gateway

You can restart the xFi Gateway in more than one way.

  • On your Xfinity app or the xFi website go to the Overview If you are on the Xfinity app on your mobile, scroll down to Connection Trouble, and select Restart Gateway.
    If you are using the Xfinity app on the X1 Xfinity box, you can select Restart Gateway from the main Overview screen.
    And on the xFi website, you can navigate to Troubleshooting and select Restart.
  • Alternatively, you can restart the gateway device from the Account section on the Xfinity app. Tap the person icon in the top-left corner of the screen. Go to Plan Details > Restart Modem.
  • While on the xFi website, go to More > Help and click the Restart button next to Restart Your Gateway.

Keep in mind, the process of restarting your xFi Gateway can take up to 10 minutes. And during this process, you will not be able to connect to the internet, stream video on some Xfinity boxes, or use Xfinity Voice, until the device is back online.

Hopefully, if activation was not the issue and it was another bug causing the blinking white light issue with the xFi Gateway, a restart will fix the problem. After all don’t we find solutions to quirky problems with digital devices in a simple restart, ever so often?  

Check for service outage

While the blinking white light issue is seemingly related to the activation process, the white light may begin to blink in case there is a wide area service outage. When the device fails to connect to the Xfinity network, it can spiral down into a mess of blinking lights among which you may also notice the white blinking light.

If it is so, you can just go to the Help & Support section on your Xfinity app, and find if there is an outage in the area.

Get customer support with the Xfinity Assistant

Can’t fix the problem anyway, and there is no outage either?

The Xfinity Assistant provides personalized and focused help not only for account and billing matters but when service-related problems arise. Go to the Overview screen on the Xfinity app, and click on the speech bubble icon. You will find it in the top-right corner of the screen.

In any case with the xFi Gateway, you are entitled to 24/7 customer support. If need be, Xfinity tech support will reach out to you with a service call.

You can find out more ways to reach out to Xfinity here.

Concluding words

We hope the information we have put forward helps you with resolving the blinking white light issue with your Xfinity xFi Gateway. With all processes becoming digitized, help is more readily available now.  

Good luck with your device fixing, and we wish you a very happy new year!


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Does Xfinity offer local channels?

The Xfinity channel lineup offers local broadcast and public TV networks. You can check the channel list here to get an idea of what Xfinity TV packages have to offer.