Xfinity router or modem blinking green light – meaning, causes, and how to fix

Use these methods to quickly fix the green blinking light on your Xfinity router.

Troubleshooting Xfinity router modem with blinking green light.

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If your Xfinity router or modem is blinking green and you want to know why and how to fix it, we’ve got you covered.

This is an issue seemingly faced by more than a few people when it comes to their Xfinity router and modem, and it usually indicates that your internet connection is not stable. While the issue may get solved on its own after a few hours, you might need to resort to some manual fixes if it does not go away.

And that’s where we can help. Here, we’ll go into the many reasons your Xfinity router or modem is blinking green and how you can go about troubleshooting the issue, so you can get back online fast.

Quick Answer

If your Xfinity router or modem is flashing a green light, it usually means that the device’s internet connection is unstable. Ideally, the green light should be solid, which tells you that the connection is stable and everything is functioning normally. To fix the blinking green light, you can try restarting the router, improve ventilation, update firmware, disconnected a few devices, and check for local outages. For more details, check out our guide here.

Why is there a blinking green light on your Xfinity router or Xfinity modem?

Here are some possible causes for your Xfinity router or modem blinking green.

  • There is a problem with the network
  • Ongoing server maintenance or local outage
  • The router is connected to more devices than it can handle
  • Problems with the cables or power outlet
  • Overheating
  • Power outage
  • Outdated firmware
  • A broken antenna or splitter
  • Incorrect WiFi settings

How to fix the Xfinity router or Xfinity modem blinking green light issue

Here are a few methods that can help you quickly fix the green blinking light on your Xfinity router or modem.



Check for any ongoing maintenance or outages

Before moving onto any advanced solutions, it will be wise to first check whether there is any ongoing network maintenance or an internet outage in your area. The best way find out it is by visiting the official Status Center of Xfinity, where you can learn about what’s currently going on in your area. If there’s an ongoing maintenance or outage, your only option is to wait it out, as there’s nothing you can do. You should also download the xFi app and connect it with your router. It will let you know about ongoing outages in your area.



Power cycle your Xfinity router

If your Xfinity router or modem is blinking green after reset, then you may have to perform a power cycle. This will help clear any temporary issues or bugs that may have appeared during the reset process.

You can power cycle your device using the following steps.

  • Turn off your Xfinity router or modem.
  • Remove the power cable from the power outlet and the device.
  • Wait for around 45 seconds.
  • Plug the cables back in.
  • Turn on the modem after two minutes.

It will take a few minutes for the device to turn on. If the green light is no longer blinking, the issue has been resolved.



Check for broken, loosened, or damaged cables/outlets

A green blinking light on your Xfinity router or modem may also indicate a problem with your cables or power outlets. Carefully examine every cable to see if its damaged from anywhere. Even if you notice a small cut on the cable, try using a new one to see if the previous one was causing the issue. Also, sometimes the issue may be in the power outlet and not the cables. In such a scenario, you need to check the wiring of the outlet for damages.

If there are any hardware related problems, you’ll have to get it repaired or replaced.



Clean your router or modem

If you haven’t cleaned your router or modem in a while, now would be the right time to do so. If you leave the router untouched at a specific location for long, dust and debris can make their way inside the ports and prevent the cables from connecting properly. You can use a dry, soft brush to clear the debris from the ports.



Check the splitter

If you’re using a splitter to connect multiple devices to the router, remove it and check for damages. A green blinking light on the Xfinity router may indicate that there’s a problem with the splitter. Therefore, either get a new splitter or plug the modem directly into the main cable without using one.



Replace the antennas

If you accidentally dropped the router or its antenna got damaged through some other way, it may be causing the green blinking light issue. If this is the case, your only option is to contact Xfinity customer support service and request them to send you a new antenna.



Check for overheating

Xfinity routers and modems can overheat under load or when placed inside a closed compartment where ventilation is poor. Overheating can prevent the router from functioning properly, so you need to change its location and place it somewhere in the open where heat dissipation is great.

If your router is overheating even when its placed in an open area with good ventilation, there may be something wrong with the hardware. In this case, send it back to Xfinity and ask them for a replacement.



Don’t overload the router or modem

Overloading issues occur when your router is connected to more devices than it can handle. Each router has its own limit and if you try to go over it, you’ll face different issues, including the green blinking light. To fix this, disconnect all unnecessary devices from the router. This can be quickly done by changing the WiFi password.



Keep your router and modem up-to-date

Always make sure to install the latest version of the router or modem’s firmware. New updates bring a lot to the table, such as new features. On top of that, they also fix several network related problems. If you haven’t updated your Xfinity router or modem in a while and are facing the green blinking light issue, updating the firmware might make it go away.

To download the update, you can follow these steps.

  • Head over to
  • Sign in to your account.
  • Go to the Update Firmware tab.
  • Download and install the latest update.

When updating, you might see an orange or yellow blinking light on the router or modem. This is normal and will go away after the process is over.



Double-check the WiFi settings

If you configured the router on your own, you may have made a mistake during the process. In correct details can cause the green blinking light to appear on the Xfinity router or modem, so you need to go back to the dashboard and make sure the DHCP configuration, IP details, and everything else is correct.



Contact your ISP

Sometimes, the issue may not be linked to the router itself but your ISP instead. If the router is unable to recognize your ISP, you won’t be able to access the internet. In such a case, you have to contact your ISP and tell them to resolve the issue form their end.



Perform a factory reset

If you’ve tried everything and the green blinking light is not going away, then your last resort is to factory reset your device. This will take it back to how it was the first time you purchased it.

To factory reset the router or modem, you need to get a small pin and follow these steps.

  • Find a small hole at the back of the device.
  • Take the pin inside this hole and press the button.
  • Hold it for around 10 seconds and let it go as soon as the indicator light starts to blink.

After the process is over, your device will be as good as a brand new one.



Contact Xfinity customer support

Even if a factory reset hasn’t solved the problem, then your only option is to get in touch with Xfinity customer support and let them know about the issue. Some problems are hardware based and they can not be fixed by a common user. The Xfinity team will most likely ask you to send the device back to them, and they will either repair it or send you a new unit if your current one is beyond repairing.

How to fix a blinking green light on my Xfinity modem?

As mentioned above in our elaborate guide, there are quite a few ways you can try to fix the blinking green light on your Xfinity modem or router. Some quick things you can try are checking the cables, power cycling, checking the power supply, and seeing if there are any outages in your local area.


If your Xfinity router starts blinking, first of all, don’t panic. Instead, focus on fixing the issue by first finding out if there’s an ongoing maintenance or internet outage in your area. If there isn’t, check the cables or power outlet for damages, update the router’s firmware, and reconfigure the WiFi settings. If all else fails, feel free to factory reset your router. And even if that doesn’t fix the problem, contact Xfinity customer support for further assistance.

In case you’re planning to replace your current device with a new one, check out our top picks for the best modems for Xfinity and the best routers for Xfinity.