xfinity modem blinking green

How to Fix Xfinity Modem Blinking Green

Xfinity modem blinking green issue can occur anytime! At one point in time, did you ever notice that? During this time, did you experience problems with your internet connection?

More than half of Comcast and Xfinity users and subscribers experience this at least once a year, but what does this really mean?

In today’s guide, we’ll walk you through what the Xfinity modem flashing green sign is. We’ll find out what it is, as well as what you can do to solve it on your own!

What Does the Blinking Green Light on Xfinity Modem Mean?

While a green light may signify nothing wrong, in Comcast and Xfinity modems and routers, it’s not the same.

If your Xfinity box is blinking green, it means that the internet connection is unstable. Furthermore, there could be a problem with the server or with the connection you’re receiving.


Some of the most common reasons why your gateway is blinking green include:  

reasons for xfinity modem blinking green

Loosened Cables

One of the possible reasons why you might be experiencing that is because of loose cables.

Although you don’t regularly touch it, these cables are sensitive. They can slide and become loose over time.

So, check the cables and see if they’re connected properly.

Damaged or Broken Cables

In the context of cables, they might also be damaged or broken, not only loose.

So, what you have to do is to check if all your cables are intact. If you see a little smudging or scraping of the cover, it’s best to replace it with a new one.

Try finding a cable that fits it. You don’t have to worry about the brand of the cable, so long as it fits and that it’s able to give you the “click” sound, which means it’s attached, you’ll be good to go!

Outage, Power Interruptions or Provider Problems

Another reason is because of the provider itself. Comcast may have certain dilemmas with their internet connection and their other services that might have caused your sluggish connection.

If the problem just randomly occurred out of nowhere, your best bet is to contact Xfinity and ask if there’s an outage.

Also, power interruptions could be the culprit of why you’re experiencing it.  

Splitter Not Functioning Properly

Another reason why your Xfinity modem is flashing green is that there might be problems with your splitter.

Splitters divide and separate connections into two (2) or more links; it acts as a bridge mode but in different categories. Technically, its “splits” connection to WiFi, TV, phone, and other devices.

If the splitter is overused and it’s no longer functioning properly, then that’s where the problem might be.

Modem Overloading

Unless you’re using a state-of-the-art router, which will be able to accommodate more than 20 devices, your modem would experience overloading.

Overloading is when the modem accommodates more devices than the limit it can hold. For instance, if your modem is only capable of catering to 6 devices, and it exceeds the limit and holds 8, then it can overload.

To avoid this, all you have to do is to stick only to the amount it can accommodate.

Modem Defects and Problems

Lastly, you can’t escape the fact that even Xfinity’s equipment could have defects.

You may have been using it for a year, but because of a particular problem, it got bricked when it crossed its 365th day.

If this is the problem, you have no other option but to change up your modem. Contact Comcast and tell them about your dilemma; they’ll help you with it.

While these are problems that can be within the norm for you, you can experience it without you knowing.

xFi App

On your xFi application, if you experience this blinking on your xFi modem, when you open your app, it’ll tell you what the exact problem is.

For instance, if you open your app, it may tell you that there’s an outage in your area. Moreover, they’ll give you an update on when it will be resolved.  

So, if you’re eager to know and figure out what caused the green blinking light on your gateway, you can download the xFinity application and check what’s currently happening.

You can also contact their team directly and speak to a representative if you’re more comfortable doing so.

How Can You Fix Comcast Modem Blinking Green?

how to fix comcast modem blinking green

Is there something you can do if you’re experiencing this problem? Would you be able to restore your connection alone?

There are a couple of steps for the procedure on how you can fix and resolve it.

Step 1: Check for Loose or Damaged or Broken Cables

Since one of the causes cables, check all the cables connected to your modem.

Check if there are loose cables and if there are, remove and reinsert. You can also double-check if all the cables are in their respective ports and outlets.

Furthermore, there could be broken or damaged cables. These cables might be what’s causing the interruption of your internet connectivity.

Step 2: Power Cycle the Modem

After you check the cables, since you’re already near your gateway, what you need to do is to power cycle your modem or your router.

You can do this by unplugging the router from the power supply or by removing the power cord at the back of the router. Keep it unplugged for about 15 to 25 seconds.

While unplugged, press and hold the power button on the gateway, and while you’re doing so, plug the router back in for it to turn back on.

Step 3: Disconnect and Reconnect

Next, you want to disconnect and reconnect devices you’re using to see if something’s changed.

disconnect xfinity modem

For example, disconnect the connection from your PC or your laptop to the modem. Keep it disconnected and reconnect it after the next step, which is…

Step 4: Make a Direct Connection

Using the main cable, plug it directly into the router. What this means is for you to refrain from using a splitter to divide and separate the connection.

Splitters tend to distribute bandwidth to different devices available. And, if the splitter’s broken, this might be the reason why your Xfinity modem is flashing green lights.

Step 5: Disconnect Other Devices

After you directly plug it, disconnect other devices connected to the gateway (if you haven’t already).  

Remove two (2) to three (3) devices and see if it’ll work. In the end, the problem might be simple enough that you only need to disconnect devices to make it work.

Step 6: Check For Service Interruptions

Last but definitely not the least, check on the Xfinity website and see if there’s any service interruption or outage in your region.

As we have detailed above, you can check it on your xFi application.

  • Launch the xFi application
  • Log in using your Comcast account
  • Then, navigate and locate Check the Link of Service Interruption.
  • If there is, problem solved!

NOTE: If there’s a current outage, then there’ll be information on when the service will be restored, in estimation. They will give you an idea of when they started to work on it, too!

I Followed Everything, Still Xfinity Modem Blinking Green?

xfinity modem still blinking green

So, you’ve followed all of these steps patiently and your Comcast Modem is still giving you a green blinking light, could there be problems with the modem itself?

In case the Xfinity box blinking green is persistent and there’s no outage in your area, you could try doing a factory reset on your modem.

Here’s how you can do a factory reset on your xFi gateway.

Try a Factory Reset

One of the final ways to solve your Xfinity modem blinking green is by doing a factory reset.

To do a factory reset, make sure that your gateway is plugged in. You need to see the POWER light LED blinker enabled.

At the back of the router (or where the cables are), you’ll see a small hole with the label RESET beside or below it. That’s the reset button.

Using a pin or anything that could fit in it, press and hold the little button that you see inside of the hole.

Hold it for about three (3) to six (6) seconds. You’ll only stop pressing when you notice the lights on your gateway go off, and after the POWER light is turned back on again.

When you’re able to do that, then you’ve successfully reset your network gateway!

Contact Xfinity Support

It could be safe to conclude that the problem is with your modem or your gateway already. But, to be sure, the best thing to do is to contact Xfinity’s technical experts and customer service department.

Tell them that you were able to do everything – including a factory reset – but it’s still blinking green continuously.

In this regard, you’d have to contact Xfinity or Comcast’s technical support team and ask for their assistance. They might come up with different resolutions such as replacing your gateway, checking your area, and so forth.


Now, you wouldn’t be dumbfounded if you see that your Xfinity modem is blinking green! You’ll have the right set of knowledge and information to fix it!  

Do you have to be an expert to solve it? Do you need to have sufficient knowledge with networks and hardware? – Absolutely not!

Read Next: Learn how to turn off your Xfinity Wi-Fi at Night!

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