Xfinity modem red light – meaning, causes, and how to fix

These methods can help you fix the red light on the Xfinity modem quickly.

Xfinity modem red light

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Are you facing the Xfinity modem red light issue, and you can’t figure out how to fix it? We’ve got you covered.

The red light on Xfinity modems indicates no internet connection. This can be due to many reasons, including a local area outage, which can also cause the Xfinity modem blinking green issue and the Xfinity modem blinking blue issue. However, if the light does not disappear on its own, there is likely a software glitch or something wrong with your cables. Before contacting the professionals, you should try to fix the issue yourself.

To help you resolve this issue, we will tell you the different reasons behind the red light on Xfinity modem and the steps you can follow to get back online.

Quick Answer

If there’s a red light on your Xfinity modem, it means there is no active internet connection. If a simple restart does not fix the issue, you need to check for local outages, damaged cables, or dust inside ports. But if everything’s fine, try power cycling the device, updating the firmware, and factory resetting it.

You can find more methods below.

Why is there a red light on my Xfinity modem?

Here are some possible reasons behind the red light on Xfinity modems.

  • Internet outage.
  • Damaged or loose cables.
  • Software glitch.
  • Overheating.
  • Outdated firmware.
  • Hardware-issue.

How to fix the Xfinity modem red light issue

Let’s go over the different methods to resolve the Xfinity modem red light issue.



Check the network status of your area

Your first step should be to check for any local outage or scheduled maintenance in your area. This is one of the biggest reasons behind the red light on Xfinity modems. So, head over to the Xfinity Status Map, and if there is a known outage, you don’t have to try any other fixes. Just wait for a while, and Xfinity will resolve the problem.



Examine all cables and splitters for damage

If everything is working smoothly from Xfinity’s end, any cable damage or loose connection from your end can also cause no internet connectivity, hence the red light. Thoroughly inspect all your cables and connections, ensure there are no cuts, bends, or signs of stress, and the cables are firmly inserted in the correct ports, which can be seen below.

Internet modem with labeled ports against a blue background, blinking white.

Furthermore, take out any splitters and try using the primary ethernet; if the light disappears, the issue is with the splitter.



Power cycle your modem

If you recently had a power outage, it might have created a software glitch or bug within your modem’s software, disrupting its ability to connect to the internet. A power cycle will give your modem a cold restart, eliminating any bugs or glitches.

All you have to do is unplug your modem, remove all the cables, wait for 10 minutes, put the cables in, and power it on. Again, let it sit idle for around 5 to 10 minutes, and the red light should disappear.



Make sure the modem is not overheating

Many people put their modems in a closed compartment if it does not match the room’s aesthetic. However, the modem will overheat and stop working if it is not getting the proper airflow or has not been cleaned in a long time.

Put your hand on the modem and check if it feels warmer than usual; if so, there is a big chance it is overheating and you need to change its location. While you are at it, clean the modem to remove any dust as well.



Update its firmware

While the firmware usually updates itself, there can be times when a bug causes the red light to appear. If you plan to update the firmware manually, ensure you have a steady power supply first, as losing power during the update could damage your modem even more.

  • Sign in to the Xfinity website using your credentials.
  • Head over to the Update Firmware tab and download the latest update.
  • Open it to install it.


If the modem changes its red light to flashing orange or yellow, do not worry because it is part of the update process.



Do a factory reset

A factory reset should be your last resort before you call Xfinity support. That’s because while it is the best way to clear out any software-related issues, it also wipes out all network configurations. This means you will have to set up your modem just like you did when it first arrived.

  • Find and press the reset button on the back of the Xfinity modem.
    A Xfinity modem blinking orange, labeled with Xfinity branding featuring a reset button as indicated by a red arrow.
  • Hold the button for one minute.
  • Once all the lights have disappeared, let go of the button.

Give the modem around 5 minutes before you start setting it up.



Restart the modem and router

Restarting your equipment can take care of many issues, including networking problems. So, before anyone asks, did you try turning it off and on again – try this method, and it might resolve the Xfinity modem red light issue. Here is how you can restart your modem and router.


  • Disconnect the power cable from the modem
  • Wait for 1 – 2 minutes.
  • Plug everything back in.
  • Wait for a couple of minutes for the modem to restart and complete the boot process.


  • Unplug the router from the power source
  • Wait for 1 – 2 minutes
  • Connect everything back again
  • Wait again for the router to restart


Try different outlets to eliminate the doubt of a faulty outlet. You can reset these devices by locating the small hole on the back, inserting a pin or a toothpick, and holding it for 20 – 30 seconds.



Check for modem overloading

The modem might be overloaded with too many connections, causing it to show the red light. Once again, this is an easy issue to resolve. Simply disconnect the devices one by one and see if the red light disappears. If it does, then consider upgrading your modem to handle your preferred workload.



Place the modem in a different location

Many times, simply changing the position of the device can resolve issues such as this one. Try putting your Xfinity modem in different locations where it is easily accessible by other devices, which will also streamline their internet connectivity.



Suspended connection

We can get distracted by the hustle and bustle of everyday life, and making some payments might slip our minds. In this case, Xfinity might’ve suspended your internet connection if you have outstanding bill payments.

To see if this is the case, simply contact them to make overdue payments, and they should restore your internet connection promptly.



Get assistance from Xfinity

If your Xfinity modem still has the red light, something might be wrong with the wiring outside your house or the modem itself. If that’s the case, you need to contact Xfinity for support. They will send out a technician to troubleshoot the issue. If there’s something wrong with the modem and it can’t be repaired, you’ll likely get a replacement device.


The red light on Xfinity modems is frustrating because it usually means your internet is down. But don’t worry too much. First, see if Xfinity has reported any outages. If there aren’t any, inspect all your cables for damage and make sure your modem isn’t overheating. You can then try power cycling, updating, or resetting your modem. If these steps don’t fix it, contacting Xfinity for help is a good idea.

In case there is something wrong with your modem or router, and you end up replacing it, check our top picks for the best modems for Xfinity and the best routers for Xfinity. Also, make sure to learn how to fix the Xfinity modem blinking orange issue, as you might encounter it while updating the device.

Ussamah works as a content writer and editor at BGFG. He is experienced in tech, hardware, gaming, and marketing.