Xfinity modem blinking green and wondering why? When the Xfinity modem is blinking green, it typically indicates an ongoing task or process with your network device.
On the other hand, a solid green light signifies a seamless connection has been established, and the device is ready for use!”
The green blinking light on your Xfinity modem indicates that it is currently in the process of establishing a connection with the internet network. Once the connection is successfully established, the blinking should stop and remain steady.
To identify the reason for the blinking green light, we need to observe any patterns in the blinking that will suggest.
Let’s unwrap further!
9 Reasons Why Xfinity Modem Flashing Green?
- The Xfinity modem is restarting or booting.
- Modem is attempting to connect to the internet.
- The green light flashes during a firmware update.
- The Xfinity modem is facing a networking error.
- A power failure with the Xfinity network modem.
- The Coaxial cable is disconnected from the modem.
- The Xfinity modem is undergoing diagnostics.
- An Xfinity service outage from the provider.
- The green light flashes during a factory reset.
Try This First!
Sometimes the Xfinity modem is facing IP conflicts, which only require a refresh so the best first step would be to restart the Xfinity modem.
Simply, unplug the modem from the power and wait for 60 seconds until the device discharges and cools down.
How To Fix When Xfinity Modem Blinking Green?
Follow the steps in chronological order for the quickest results!
1. Check for Xfinity Service Outage!
If you’re contracted with Xfinity and receiving internet from their sources, perhaps there is an ongoing outage at this very moment.
When there is no internet coming to the Xfinity modem, the device recognizes this as an error, hence the green light indicates that something is wrong.
- To justify, go to Xfinity Status and select “Check for Outages”!
Then you simply need to input the Xfinity service address so you can be provided with recent and accurate information about any outages. Based on your findings, proceed accordingly.
Note: In case you’re not contracted with Xfinity the best course of action would be to contact your internet supplier to check for any planned or unplanned outages.
2. Reconnect the Coaxial Cable!
The Xfinity internet services are delivered to the modem via coaxial cable, whether it’s coming from the wall or not.
When this cable becomes lost or disconnected from the Xfinity modem, the device would be stuck in a loop, attempting to reconnect indefinitely, with a blinking green light.
- Connect one end of the Coaxial cable to the wall
- Connect the other end to the Xfinity modem port
Tighten the cable on both sides and when you’re ready, restart the Xfinity modem for the link to refresh.
With a bit of luck that would solve the issue and the green light should turn solid.
3. Update Xfinity Modem *Manually*
Sometimes the reason why the Comcast modem blinks green light is due to ongoing or failed firmware upgrades.
Typically Xfinity equipment updates automatically during the night but when an update fails, some impermanent networking issue could arise, thus the green light blinks!
How to Update Xfinity Modem via Web:
- Connect a device to the Xfinity modem via WiFi or Ethernet.
- Open an online browser such as (Google Chrome or Safari).
- Type 10.0.0.1 into the search field and search the query.
- Wait until the Xfinity login page loads and appears.
- Insert username: “admin” and password: “password”.
- Then go to Settings > Advanced > Administration.
- Select the “Firmware Update” button to start the upgrade.
In case that doesn’t work, open the CMD (Command Prompt) on a Windows-operated machine connected to your Xfinity modem.
Then type “ipconfig” and copy the Default Gateway IP that you can use to open the router’s control panel via the web browser.
How to Update XfinityModem via App:
Alternatively, you can use the Xfinity mobile app available for Android and iOS to manage your Xfinity modem setting remotely.
You only need to install the app and connect your smartphone to the modem’s WiFi in order to start operating in the control panel.
4. Reset Xfinity Network Connection
It’s possible that your local network is currently down, cursing the Xfinity green light to blink due to an IP conflict.
The solution would be to refresh all network services, and again we’ll need a Windows-operated machine, connected to the Xfinity modem.
Step #1 Network & Internet Settings
Step #2 Advanced Network Settings
Step #3 Reset Network Settings
Tip: In case your internet is delivered by an Ethernet cable, feel free to reset the Ethernet connection from the same menu as well.
5. Factory Reset Xfinity Modem!
In case the blinking green light on Xfinity modem is still there, perhaps the culprit is related to an internal software fault.
The best way to approach this kind of issue would be to factory reset the Xfinity modem and set up everything from scratch!
Here’s how to factory reset an Xfinity modem in easy steps:
- Find the reset button pinhole on the back of the modem.
- Use a non-metallic, sharp object to securely reach inside.
- Press and hold the Reset button for at least 15 seconds.
- Release the button when all Xfinity modem LEDs go off.
Info: After the steps above the Xfinity modem will undergo a system reset, which might take up to 60 seconds and the blinking green light should disappear.
6. Flush the DNS via CMD!
Sometimes when there are conflicts in our local network, which makes the Xfinity box blinking green.
One of the best ways to resolve any potential issues is to flush the DNS and again, we’ll be needing a Windows-operated machine or computer connected to the Xfinity modem.
Then you simply need to open the Command Prompt “CMD” as administrator and type “/flushdns” and then press enter.
Note: Don’t forget to reboot the Xfinity modem after flushing the DNS!
One More Thing!
While you’re in the command prompt, you should also release and renew your IP address, which is a quick solution for IP conflicts as well.
You need to type “ipconfig /release” (no quotes), press Enter, and then “ipconfig /renew” (no quotes) and Enter again.
Info: After the first command the internet will stop until you “renew” the IP with the second command.
7. Disconnect Ethernet Connection
A quick fix that you can undertake immediately is to disconnect your Ethernet-connected computer from the Xfinity modem.
It’s a rare occurrence but some users confirmed that the blinking green light was caused by a defective Ethernet cable or IP conflict from a PC.
The Ethernet cable should be blinking when connected into the Xfinity cable box and if yours is dull, perhaps it’s not working. Such an incident will definitely trigger the blinking green light.
Note: If the green light stops blinking without an Ethernet-connected device, reset the network settings of the network receiver and connect again.
8. Diagnose Xfinity via “Xfnity.com”
In case you didn’t know, there is a “Self Diagnosis” tool available to all Xfinity customers and can be reached by signing into your account.
It’s known that during the diagnosis check, the modem will be blinking in green so expect any changes after the process is completed.
- Get started by signing into Xfintiy.com via ID and password!
Under the Device’s Page, you can directly Run Diagnostic Check to identify and resolve issues with your setup. The process shouldn’t take longer than a couple of minutes!
Info: In case the diagnostic tool does not resolve a problem or brings up some facts that you’re not aware of how to approach, consult with Xfinity Support.
More about this in the final step!
9. Contact Xfinity Customer Service
To be able to draw a conclusion and finalize this guide, the best course of action would be to check whether your Xfinity modem warranty is intact.
Then with or without a warranty you can still contact an Xfinity representative and discuss the blinking red light further.
- Contact Xfinity Support via Live Chat
- Contact Xfinity directly (888) 936-4968
Reminder: Don’t forget to share what you’ve attempted in this guide to save time!
Hence, we’ve learned that Xfinity modem blinking green light indicates some sort of network activity, whether it’s going to be an error or simply a firmware update.
The best way to identify the problem is by attempting methods involving refreshing the network!
Should my Xfinity Modem Light be Green?
Under normal conditions, the light on your Xfinity modem should be solid green, indicating a successful internet connection. If the light is blinking green or a different color, it may signify a setup or connectivity issue that needs attention.
What Color is the Light Supposed to be on my Xfinity Modem?
The light on your Xfinity modem should be a solid green, which indicates a successful internet connection. If it is blinking green, it means the modem is still establishing a connection.
Why is my Xfinity Wi-Fi Blinking Green and Orange?
If your Xfinity Wi-Fi is blinking green and orange, it typically means that the modem is in the process of connecting to the internet or updating its firmware. This behavior is normal during setup or maintenance activities.
Kevin has over five years of experience working in various Tech startups and providing Technical solutions. He has contributed to many Tech publications and websites.