What does the Xfinity box blinking blue mean and how to solve it ?

Have you ever encountered the problem of the Xfinity box blinking blue? If so, you are not alone.

Furthermore, many Xfinity customers have reported this issue, which can be frustrating and confusing. As a result, what does the flashing blue light mean?

Is it a sign of a serious malfunction or merely a simple technical problem? Consequently, how can you fix it and restore your cable service?

  • Restart your router 
  • Check your cable connections
  • Update your firmware
  • Disable the WPS mode
  • Factory reset
  • Contact Xfinity customer support

In this blog post, we’ll explain what the blinking blue light on the Xfinity box means, what causes it, and how to fix it. Furthermore, we’ll also give you some tips and tricks to prevent it from happening again.

Why is my Xfinity box blinking blue ?

A blinking blue light on your Xfinity box can have a few different meanings depending on the specific model and the frequency of the blinking.

Here are some possible reasons why your Xfinity box might be blinking blue:

Lost connection to cable signal: This is usually the culprit. Therefore, the flashing blue light means the set-top box has lost connection to the cable line leading to your home. Consequently, this may be due to loose connections or problems with the cable itself.

Outage in your area: There may be a temporary outage affecting cable service in your neighborhood. As a result, you can check the Xfinity outage map online.

Resetting the set-top box is necessary: A simple reset of the cable box by unplugging the power for 30 seconds often fixes minor issues causing the blue light. Consequently, this restarts the device. Furthermore, unplugging it for a short time allows any temporary glitches or bugs to clear from the system memory.

Wiring problem: Loose, damaged or poorly connected wires between the cable line and the box can disrupt the signal. Specifically, loose, damaged or poorly connected wires can cause interruptions in the transmission of data.

Incompatible or faulty cable box: If problems persist after troubleshooting other issues, the particular cable box may be faulty or incompatible with your service level. Consequently, if resetting and checking connections does not resolve the blue light issue, the cable box itself could be the root cause of the disruption.

Signal is too weak: Cable signal strength can degrade on cable lines, especially if there are too many splits. A technician may need to check the connections.

Also Check: How to fix Xfinity router blinking orange ?

​How to solve Xfinity box blinking blue ?

Are you bothered by the blinking blue light on the Xfinity box that won’t stop? Wondering how to fix it?

In this section, we will show some troubleshooting methods for this common problem that affects many Xfinity users.

Furthermore, follow below mentioned methods to solve the issue Xfinity box blinking blue:

Power Cycle

power cycle your cable box to fix Xfinity box blinking blue
  • First, unplug the Xfinity box from the outlet.
  • Next, wait at least 30 seconds.
  • Then, plug the box back in and wait for it to boot completely. This usually resolves temporary failures.

Check the cable connections

check your cable connections and fix your Xfinity box blinking blue
  • First, make sure the coaxial cable is securely connected to both the Xfinity box and the wall outlet.
  • Furthermore, loose or faulty connections can interfere with signal reception.
  • Additionally, if you are using a splitter, try removing it and plugging the cable directly into the box.

Replace the cable card (if applicable)

replace the cable card to fix the issue
  • Next, if you have a cable card, carefully remove it and reinsert it, making sure it is seated correctly.

Run firmware update

run firmware update of the box to solve the issue Xfinity box blinking blue
  • First, from the Xfinity menu, go to Settings > System Update.
  • Next, follow the on-screen instructions to start the update process. This can help troubleshoot software problems.

Use the Xfinity MyAccount app

use Xfinity app to troubleshoot box
  • First, if you have the Xfinity MyAccount app, try troubleshooting through it.
  • Next, go to the TV tab.
  • Then, select the problematic cable box.
  • Finally, choose Troubleshoot. The app can offer guided troubleshooting steps.

Relocate Box

The location and environment around your box affect its performance and functionality.

Furthermore, physical obstacles such as furniture, walls, enclosed spaces, or other electronic devices can interfere with wireless signals.

  • Firstly, even small things like dust and debris can cause overheating problems over time. To help prevent this, consider the following.
  • Secondly, place the box in an open area with a clear line of sight, elevated if possible, to allow signals to transmit without barriers.
  • Furthermore, perform routine maintenance by cleaning any accumulated dirt or particles from the exterior and ventilation areas. This helps the router dissipate heat efficiently.
  • Additionally, allow some time, say 15 to 20 minutes, for the router to re calibrate after relocating or cleaning it.

Contact Xfinity Support

contact xfinity support for help
  • First, if none of these steps resolve the issue, contact Xfinity Support for further assistance.
  • Next, chat with them online through their website or app.
  • Additionally, schedule a technician visits if necessary.

Importantly, the above outlined steps are general steps to solve the Xfinity box blinking blue issue and the exact troubleshooting steps may vary slightly depending on the specific model of your Xfinity box.

Furthermore, check out Xfinity online support resources or ask their customer service for more personalized guidance.   

Also Check: How to reset Xfinity router ?

Why Xfinity box blinking blue three times ?

There are a few potential reasons why an Xfinity cable box may be flashing a blue light three times:

Firmware update issue: If the box tries to install a firmware update but is having problems, it may flash blue three times. This could be due to a weak Wi-Fi signal preventing the update from downloading completely.

Hardware malfunction: In some cases, a hardware malfunction within the set-top box may cause it to flash blue three times as an error code. Things like faulty memory, processors, or ports could trigger this.

Signal problems: Problems with the signal of the incoming cable from the main line can affect the box. Problems such as a loose connection, damaged cable, or interference may manifest as three blue flashes.

Pairing/Authorization Failed: When the box attempts to pair with the Xfinity network or activate authorized channels, it may flash three times if the process fails. Weak signal strength could block this.

Outdated cable card: If the box uses a cable card for encryption/authorization and the card is outdated, it may not function properly and flashes three times.

To resolve this, I recommend restarting the set-top box, checking that all cable connections are secure, and making sure the Wi-Fi signal is strong at the set-top box location.

If problems persist, contact Xfinity Support; They may need to troubleshoot signal issues or replace the decoder/card.

Also Check: Fix Xfinity router blinking green


In conclusion Xfinity box blinking blue is a common problem faced by many customers.

Initially, this indicates that the router is in WPS mode, which can be caused by several factors such as connection loss, interruption, cabling problem, faulty cable box, or weak signal.

Furthermore, there are some simple steps you can take to troubleshoot and resolve the issue, such as power cycling, checking cable connections, replacing the cable card, running a system update, disabling WPS mode, or performing a factory reset.

In addition, if none of these methods work, you can always contact Xfinity customer service for further assistance.

Frequently Asked Question’s (FAQ’s)

When Xfinity box is blinking blue ?

The Xfinity box flashes blue when it is in WPS mode, which is a pairing mode for wireless devices. This can be caused by various issues such as loss of connection, outage, wiring problem, faulty cable box or weak signal.

How do I turn off the blue light on my Xfinity box ?

Press the Xfinity button, go to Settings > Device Settings > Device Lights, and adjust or turn off the blue light.

Is there a reset button on Xfinity box ?  

Yes, there is a reset button on the Xfinity box. It is located on the left side of the card access door on the back of the case. You can press it with a pointed object to restore the box to its factory settings.

Content Writer

Smith Ron, the writer at Assistme360. He has extensive experience in crafting straightforward, step-by-step guides for technical issues. His broad knowledge ensures accurate solutions. Kindly spare a moment to drop a comment down and express your opinions. Your feedback can be valuable in assisting others who may come across similar problems.

Leave a Comment