Так кто нибудь поможет мне с решением проблемы? [So will anyone help me with the solution...

Hi
EVGENIY.KIM,

I'm sorry, but I don't see where you specifically stated that you had already re-added your account to your Xbox console so therefore it was a troubleshooting step I suggested that has been known to resolve Xbox sign in issues. In order to prevent any sort
of repetitive answers, we suggest listing every troubleshooting step you have tried with detailed descriptions in your original post so we have a better idea on what you have already tried to then not suggest those steps. We are a community forum and we will
help the best we can with the information given to us and the limited resources we have to find an answer for you.

If it's only Xbox Live services that you cannot sign into then it's possible that your internet service provider is blocking the Xbox Live ports to your router. For the ports that you need to open along with information on how to do so can be found from
here, "Network ports used by Xbox Live", and you should also contact your internet service provider and ask them to make sure you are set
up for Xbox Live connectivity. They may need your console's MAC address which can be found in the Advanced settings section of your Network settings.

Это вариант можно исключить,мне уже несколько раз пытались помочь этим советом.Я уже не раз пробовал этот вариант.

Проблема в том что я не могу войти в аккаунт и с телефона

[Translation - This option can be deleted, I have already tried several times to help this Council. I have tried this option more than once.

The problem is that I can't log into my account and from my phone]

Почему вы советуете мне делать всё время одно и то-же?

Я уже писал выше что не раз так делал,толку нет!

[Translation-

Why do you advise me to do the same thing all the time?

I already wrote above that I did this more than once, to no avail!]

Bad request-Request too long

HTPP Error 400

Hey Xbox Fan,

Thank you for the quick response. We understand you have been unable to login to your account on your phone. If you haven't already done so, go ahead and try signing in to our official website
xbox.com. Please provide any error code or message you are receiving when trying to login to our site or the mobile Xbox App. Cheers