Windows 10: Cellular wont pass traffic when connected to eithernet

I have a Windows 11 laptop with a built-in cellular modem. I often have to connect to 'dead' ethernet connections to troubleshoot router or switch issues, but when I do, Windows WILL NOT allow any internet traffic over the cellular modem. Its not disconnecting, it is just refusing to route. This is evidenced by running a continuous ping; when I connect an ethernet cable, as soon as a gateway and DCHP connection is established my pings dtart dropping; but it takes less than a second for them to resume with the physical cable is removed from the LAN port.This means I can not search for solutions

:)

 

Cellular/SIM connection not available/disappearing

Hi,

A faulty cellular adapter is one of the possible reasons why the cellular connection is disappearing from the laptop. A disabled adapter in the Network Connections Settings can also be the cause of this issue. We suggest you to enable the cellular connection
in the Network Connections settings. You can follow the steps below:

• Press the Windows key.
• Type View Network Connections.
• Press the Enter key.
• Right-click on the cellular adapter and click Enable.

Should you need further assistance, don't hesitate to get back to us.

 

Cellular/SIM connection not available/disappearing

Hello Eric,

This problem has appeared again and I tried this but the cellular adapter was already enabled. The system still indicated there was no connection. This is the third Verizon SIM card we've sent to this user and I confirmed the card is active and there's nothing
wrong with our Verizon account. Also, it was working for a while the other day and then recently stopped again. It appears as if the laptop randomly stops detecting the card. This has happened to at least two other users over the past month as well. But for
this one user in particular, it seems to be an ongoing problem.

Hi,

Just to check, are you still having issues with your cellular/sim connection?

We're looking forward to your reply.

Hello,

Yes. The cellular adapter seems to disappear often.

 

Cellular/SIM connection not available/disappearing

Hello Eric,

This problem has appeared again and I tried this but the cellular adapter was already enabled. The system still indicated there was no connection. This is the third Verizon SIM card we've sent to this user and I confirmed the card is active and there's nothing
wrong with our Verizon account. Also, it was working for a while the other day and then recently stopped again. It appears as if the laptop randomly stops detecting the card. This has happened to at least two other users over the past month as well. But for
this one user in particular, it seems to be an ongoing problem.