Error, The Android emulator is unable to open the web of devtunnel, about dev-tunnels HOT 4 OPEN

We'd need more information to better help here.
From what you describe so far, I don't see any particular reason for why the devtunnel URL would not work from the Android emulator.

from dev-tunnels.

We'd need more information to better help here. From what you describe so far, I don't see any particular reason for why the devtunnel URL would not work from the Android emulator.

How should I check?
I am from China, and I guess there is a problem with DNS,
I tried the Visual Studio parameter '- dns server x.x.x.x'
But the simulator did not accept this parameter
Strangely, Android WSL For Windows does not require any operation and can directly access devtunnel

from dev-tunnels.

For example:

• What is the error you are seeing? Is it a specific HTTP status code?
• Does the tunnel have anonymous access enabled or does it require logging in before accessing the tunnel?
• Do you have any request IDs returned from the tunnels service?

from dev-tunnels.

For example:

• What is the error you are seeing? Is it a specific HTTP status code?
• Does the tunnel have anonymous access enabled or does it require logging in before accessing the tunnel?
• Do you have any request IDs returned from the tunnels service?

I found the reason
Chinese government Block devtunnel, 🤣
this is a Highly regulated countries，
Any domain name needs to be on the whitelist

from dev-tunnels.