Visitor

 • 

6 Messages

Thursday, July 24th, 2025

2.4 ghz devices no longer connecting to xb8 gateway

For the past 12-18 months, my home network has been working flawlessly. I have an Xfinity XB8 (CGM4981COM) gateway and an xfi pod to ensure full coverage across my wide house; the gateway is on one side and the pod on the other. A significant portion of my network consists of roughly 30 2.4 GHz smart devices (switches, plugs, and light bulbs), which are essential for my son's independence as a paraplegic.

However, over the last week, something has changed with the XB8 gateway. The 2.4 GHz devices that previously connected to it are no longer able to establish a connection. Interestingly, the 2.4 GHz devices on the other side of the house, connected to the xfi pod, are still working perfectly. All 5 GHz and 6 GHz devices continue to connect to the XB8 gateway without any problems. I'm aware that band splitting isn't an option because of the xfi pod setup.

I've already performed multiple reboots of the gateway. Do you have any insights into what might have changed with the XB8 gateway, or what I can do to resolve the connectivity issues for my 2.4 GHz devices?

Oh yeah, one more thing. I also noticed that the port forwarding settings on the XB8 gateway were deleted.

Oldest First
Selected Oldest First

Contributor

 • 

113 Messages

3 months ago

Open up the Xfinity app, tap on the WiFi tab at the bottom of the screen, then tap on the WiFi details tile in the middle of the screen, followed by tapping Edit WiFi settings at the bottom of the screen. Ensure that Security mode is set to WPA3-Personal-Transition. 

I know that there have been recent updates to the XB8 and the Xfinity WiFi Extenders (xFi Pods), so hopefully a full restart of your system fixes the issues. Power cycle the XB8 by disconnecting power for at least 30 seconds, then reconnect. Then you’ll need to do the same for the WiFi Extender. It’ll take a few minutes for the XB8 to be fully online, and likely several minutes more for the WiFi Extender. Once the Xfinity app shows both as fully online, you’ll probably want to power cycle all of the devices having connection issues. If power cycling the devices doesn’t do it, you may need to completely reset them and start fresh. Hope that you get it figured out. 

Visitor

 • 

6 Messages

Thanks for the response.  I did confirm that it is set to WPA3-Personal-Transition. I also power cycled the XB8 and the pod as you suggested. I also power cycled a few of the devices that won't connect and unfortunately I am still running into the same situation. The devices that are near the pod do connect but the devices that usually connect to the XB8 gateway still do not connect. So unfortunately that did work.

You mentioned that there was a recent update to the XB8 gateway. Is there any documentation of what was updated? It looks like other people are running into the same problem so I am thinking that it is the update that is causing the issue.  

https://forums.xfinity.com/conversations/your-home-network/wont-accept-network-password/687f9df83d8f4b32cdaffda4?commentId=6882605ef02a1b2d446527aa

 

Visitor

 • 

1 Message

@mike_s6​  eager to find out if you found a fix for this. Sounds like yours went down around the same time mine did. I’m with you on an update being the cause.    All 2.4 ghz devices. Some literally right next to eachother. One works, on doesn’t. Very high signal in most cases.  I’ve done most of the trouble shooting you have. 

Contributor

 • 

113 Messages

@mike_s6​ I haven’t seen any documentation, as there rarely ever is any, and I don’t have any specific details either. Apologies on that one. 

Two possible experiments. First, have you factory reset a few of the easier to reset devices having issues, and started fresh? The other, if possible, could you temporarily relocate one of the working devices, to be within range of the XB8 instead of the Xfinity WiFi Extender (Pod) and see whether it works?

One other thought, which Gen WiFi Extender do you have, and is it connected back to the XB8 via Ethernet cable? Gen 1 has a single Ethernet port, and Gen 2 has two ports. 

Visitor

 • 

8 Messages

2 months ago

Can confirm, 2.4ghz network has become highly unreliable which is bad because many ring cameras are limited to 2.4ghz networks.  5ghz always works, and after a router power cycle it can reconnect and then drop the connections after a few minutes, the devices have extremely good signal so its not that.  Started sometime around last week.

Visitor

 • 

3 Messages

I have also experienced this same issue since the recent xb8 update.  I have a pair of Gen 2 Xfi pods and several 2.4 ghz 5 ghz devices. The 2.4 ghz device connectivity has been terribly unreliable in the last few weeks.  I wanted to try to change the  channel manually as there are several other SSIDs operating on the the 2.4 ghz band but this option is now greyed out on the gateway admin interface, super frustrating! I did have a few days of consistent connectivity f for 2.4 GHz devices  after unregistering  the xfi pods and and restarting the gateway. I had to then connect the pods to the gateway with an Ethernet cable to get them to re-register also.  But not the issues have returned and my 2.4 GHz devices are disconnecting again which is how I got here.   I am currently away from the location but will be attempting these saw steps when I return in hopes of a resolution 

Official Employee

 • 

1.1K Messages

@user_ho8m5v Remember to let us know the steps you took to stabilize the connectivity. 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

Visitor

 • 

3 Messages

Well, I went through the same steps I described before of unregistering the pods and re adding them which again required Ethernet connectivity from the pod to the gateway to activate.  This again lasted for about 2 days until  I started experiencing connectivity problems with 2.4Ghz devices. Realizing that my DHCP lease time was also set to 2 days I decided to set all 2.4Ghz devices with a static / reserved IP on the gateway admin interface.   That was about 10

 hours ago at this point and things have been ok so far 🤞…..

Visitor

 • 

3 Messages

Well, unfortunately had another coverage failure last night….  Currently  going through the tedious process of removal and re-register I’ve described on these posts yet again…. There seems to be something occurring where the pods cannot register over the air and I am required to plug it into the gateway.   Would be really helpful if Xfinity could either come out with a recommended, tested, working  firmware for these pods or just say they are not supported so I can move on.   It seems awfully coincidental that I started having these problem and am now being bombarded with ads in the Xfinity app for the new “ WiFi Pro Service”.    I promise you I will never purchase another piece of WiFi gear from Xfinity or other service provider… this experience has been terrible… seems it’s time to move on…. Wish I had not wasted so much time on this… very dissatisfied and disappointed to say the least.  

Official Employee

 • 

2.1K Messages

 

user_ho8m5v Good morning, thank you for the update! I can see how this would be really frustrating experience. I'm wondering if you are losing connection when your nightly update is happening. I'd like to take a look into your signals coming into your home, and make sure everything is good there. Then we can go from there on a resolution. To begin, can you please send a Direct Message with your name and service address? 
 
Click "Sign In" if necessary
Click the "Direct Message" icon or  https://forums.xfinity.com/direct-messaging
Click the "New message" (pen and paper) icon
The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there.
As you are typing a drop-down list appears. Select "Xfinity Support" from that list.
A "Xfinity Support" graphic replaces the "To:" line.
Type your message in the text area near the bottom of the window 
Press Enter to send it

 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

Visitor

 • 

1 Message

22 days ago

Has anyone resolved this issue?  I just upgraded my gateway to the XB8 on Saturday and none of Roku devices can connect to the internet.  I reached out to Roku and was told it was an Xfinity problem.  

Official Employee

 • 

1.1K Messages

@user_6598c4 Are you currently using an Xfinity WiFi Booster or just the XB8 modem? If you're not using any of the extenders you can pop into the Xfinity app and manually split the WiFi bands to show a separate network for the 2.4 GHz, 5 GHz, and 6 GHz bands. You may have to delete the devices inside the Xfinity app and re-add them after the bands have been separated. 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick
forum icon

New to the Community?

Start Here