@jp23 

Thank you for reporting this unintended behavior with the MLO Network on your BE800.

The 1.2.4 Build 20250414 official version was recently released. Could you please clarify whether this behavior occurs after you upgraded to the 1.2.4 version, or it existed before this update on your BE800?

What devices are you connecting to the MLO Network when they report 'connected but no internet'? Does this error occur simultaneously on all devices, or does it only happen on a particular device? Have you ever tried to connect to an MLO Network of another router on this device?

When it displays 'connected but no internet', please check if you can still ping the gateway IP address on the client device.

Please share as many details as you can, then we can try to figure it out.

@jp23 

Thank you very much for your detailed information. I appreciate it.

So according to your troubleshooting and description, it appears that the MLO Network may stop connecting to the internet, but the BE800 still assigns valid IPs to the clients connected to it. Since the internet works fine if you disable the MLO Network, I assume this unintended behavior only relates to the MLO Network.

Suppose you prefer to use the MLO Network and it still gives errors randomly, we recommend sending an email to support.usa@tp-link.com with the following information:

Subject: [Forum Escalation][ID 835856] Archer BE800 MLO Network stops connecting to the internet randomly

Forum Nickname: jp23

Thread URL:  https://community.tp-link.com/us/smart-home/threads/topic/835856

Model&Version: Archer BE800 v1 1.2.4

Description: After upgrading to the latest 1.2.4 version, the client devices will generate an error of 'connected but no Internet' randomly when connecting to the MLO Network. When the issue occurs, I can reach the router from the client using both the IP address and the Tether app. I normally just reboot the router via one of those two and it will fix it for a few days.

Devices that connect to the MLO Network: 2 Firesticks, a Fire Cube and a Samsung S23 ultra and 24 ultra.

I've tried a weekly scheduled reboot, but that made connectivity even worse, so I've disabled it now.

Any Other Relevant Information: Please attach the configuration file on your BE800 for further investigation.

Once sent, a ticket will be created in our support system, and a member of the team will follow up to gather more information or troubleshoot a cause.