Why does not my Xbox Live connection work?

I once bought an old Xbox 360.

There I wanted to sign up, but did not work.

Then I made the function "Test Xbox Live Connection" under "Network Settings".

After that, a "!" Icon displayed in "Live Status" -> "Service: Warning"

I have turned off the Xbox several times and it does not work…

Hi

Unfortunately, I can't help you, but if it comforts you, with my xbox one it is also often for a few days times net…