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2.4ghz no internet access

2.4ghz no internet access

2.4ghz no internet access
2.4ghz no internet access
2026-04-13 03:10:56 - last edited 2026-05-04 09:46:25
Tags: #Network Connectivity #Internet
Model: Deco BE85   Deco X50  
Hardware Version: V2
Firmware Version: 1.2.1 Build 20250731 Rel. 15505

I recently added a BE85 to my x50 mesh network and am having a number of problems that I cannot get on top of. 

 

The major issue that I need assistance with is that I cannot get internet access on any 2.4ghz network. I've tried using Guest and IoT as well as only having 2.4 active on the main network. I've tried all of the different security protocols and I've reset and rebuilt the network a number of times. Internet works fine on 5ghz.

 

It's killing my smart home setup and most concerningly my Nest Protect Smoke detectors. 

 

I am connected to Spintel with dynamic IP and have both IP4 & 6 turned on, network is set up as a Wi-Fi router. Main router is the BE85 and I have 3 additional x50.  I have all of the advanced features turned off 

 

 

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#1
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1 Accepted Solution
Re:2.4ghz no internet access-Solution
2026-04-15 01:39:05 - last edited 2026-05-04 09:46:25

  @Raw29983 

Hi, 
If the Deco BE85 is removed from the Deco X50 network, please try the following steps and test whether the Deco BE85 works.

 

  1. Turn off the three Deco X50 Deco units. Disconnect the main Deco X50 from the front modem, and connect the Deco BE85 instead.


  2. Refer to the following instructions to set up a new Deco network in the Deco app for the Deco BE85 only: How to create a new network in the Deco app

  3. Once the Deco BE85 is configured successfully, please test if your phone/laptop has internet when connecting to its 2.4 GHz Wi-Fi network. 


  4. If your client devices can connect to the 2.4 GHz Wi-Fi but have no internet connection, try to change the DNS server (8.8.8.8 and 8.8.4.4) on the Deco's DHCP server page and test if this helps.


  5. Does the 5 GHz Wi-Fi work on the Deco BE85?

 

Best Regards

>> Check What's Currently Going on With Deco >> Deco Wi-Fi Heatmap ready for all Deco models
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Re:2.4ghz no internet access
2026-04-13 03:21:35

  @Raw29983 

 

First thing I would check is to make sure all the firmware is up to date.

 

  1. Go to http://tplinkdeco.net/ and log in with the same admin password you use on the app 
  2. Once your logged in click on Advanced
  3. Then System
  4. Now click on Firmware upgrade
  5. Scroll down and click on Check for upgrades and install any firmware it might find 

 

Also have you tried to remove the BE85 from your network to see if it corrects the issue? You can remove it from your network simply by pressing the reset button found on the bottom of the BE85

 

Try those steps first and then let us know 

 

Thanks 

 

Need help with the Deco app, setup, Ethernet backhaul, network switch or rolling back firmware? Router or AP mode? https://community.tp-link.com/us/home/forum/topic/699816?page=1
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Re:2.4ghz no internet access
2026-04-13 03:59:14
I've removed the BE85 and I have access to 2.4ghz internet again so the assumption is it's a setting or hardware fault on the BE85 I guess. The firmware is current.
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Re:2.4ghz no internet access
2026-04-13 04:16:33

  @Raw29983 

 

When the BE85 was in the network which port on the router were you using? Did you try all the ports? 

 

Also do you have another device you could install the Deco app on? To test to see if the BE85 is working or not I would install the Deco app on another device and make a new tp link account 

 

Power down all other Deco's and add just the BE85 to the new tp link account and see what happens. 

Need help with the Deco app, setup, Ethernet backhaul, network switch or rolling back firmware? Router or AP mode? https://community.tp-link.com/us/home/forum/topic/699816?page=1
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Re:2.4ghz no internet access-Solution
2026-04-15 01:39:05 - last edited 2026-05-04 09:46:25

  @Raw29983 

Hi, 
If the Deco BE85 is removed from the Deco X50 network, please try the following steps and test whether the Deco BE85 works.

 

  1. Turn off the three Deco X50 Deco units. Disconnect the main Deco X50 from the front modem, and connect the Deco BE85 instead.


  2. Refer to the following instructions to set up a new Deco network in the Deco app for the Deco BE85 only: How to create a new network in the Deco app

  3. Once the Deco BE85 is configured successfully, please test if your phone/laptop has internet when connecting to its 2.4 GHz Wi-Fi network. 


  4. If your client devices can connect to the 2.4 GHz Wi-Fi but have no internet connection, try to change the DNS server (8.8.8.8 and 8.8.4.4) on the Deco's DHCP server page and test if this helps.


  5. Does the 5 GHz Wi-Fi work on the Deco BE85?

 

Best Regards

>> Check What's Currently Going on With Deco >> Deco Wi-Fi Heatmap ready for all Deco models
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#5
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Tags

Network Connectivity
Internet