Skip to content
Home » Xfinity Modem Red Light Fixed!

Xfinity Modem Red Light Fixed!

As an Xfinity customer, you may experience an occasional problem with your Internet service. One common issue is when the lights on your Xfinity modem indicate that there is no Internet connection. If you see a red light on your modem, it means that the device is not receiving a proper signal from the network. There are a few potential reasons for this issue, but fortunately, it is usually easy to fix. In this article, we’ll walk you through some of the most common reasons for a red light on your Xfinity modem and how to fix them.

How To Fix Red Light On Xfinity Modem?

what does red light on xfinity modem mean? You will see the flashing red light while restarting the Xfinity modem and the light should not blink more than 4 to 5 times. But if the led flashing red continues then here you need to take some major steps:

Check the Cables

Is the Ethernet cable properly plugged into the WAN/Internet port on the back of your gateway?

If you are using a coaxial cable, is it screwed in tightly and connected to the splitter?

Sometimes the Ethernet and coaxial cables are loose and because of that, the gateway is not receiving a proper internet connection.

Restart your xfinity modem

It’s very normal for the led to be flashing red for a few seconds while restarting the modem.

Make sure that all the cables are properly plugged in and then turn off your gateway by pressing the power button for 10 seconds. Now turn on your gateway and check if the led is still flashing red.

If yes, then try this process again.

Update the Firmware

If you have successfully completed the above steps and your xfinity modem is still not working then it’s time to update the firmware.

Firmware updates are released regularly in order to improve performance, security, and add new features.

To update the firmware on your gateway:

Launch a web browser from a computer or mobile device that is connected to your home network.

  • Type in the address bar and then press Enter.
  • Sign in with your Xfinity username and password if prompted.
  • Click Advanced > Admin > Software Update.
  • If a message displays that says Your software is up to date, then you do not need to continue with the remaining steps.
  • Click Check.
  • The gateway will check for updates and then display the results.
  • Click Install Now.
  • Do not turn off or unplug your gateway during the firmware update

Check Surge Protector

If you are using an additional surge protector to run your xfinity gateway then the problem can be held due to a faulty connection. I would suggest you remove the cable from the surge protector and use a power outlet instead to run your gateway. Still, this problem persists? Check the next step, this time the culprit could be your damn router!

Router Issues

This is one of the major issues which can create havoc in your home network. Many times, the router gets into a confused state and it results in the Xfinity modem not working.

To fix this, you need to log in to your router’s web interface and make some changes. The process of logging into the router’s web interface is different for different router manufacturers.

Once you are logged in, find the DHCP settings and make sure that the DHCP is turned on.

Now, look for the DNS server settings and change it to (this is Google’s public DNS).

Save the changes and then restart your router. Now try to connect to the internet.

Xfinity Service Down

This is the last step you should take if everything else has failed. The Xfinity service might be down in your area and that’s why you are not able to connect to the internet.

You can check the Xfinity service status by visiting the official website or by calling customer care.

If the problem persists, then you should contact Xfinity customer support for help.


These are some of the troubleshooting steps you can take if you see a flashing red light on your Xfinity modem. I hope this article was helpful and you were able to fix the problem. There’s nothing to worry about because this is not a big issue. Utmost you can take help from customer services but you need to provide them in detail because according to our experts the problem could be in your gateway and you may need to replace the whole device (it would be better only if you have the warranty to claim). If you have any further questions, feel free to post them in the comments section below.

Read More,