Testnet v4 - socket recv error 10054

Hi everyone,

I’m trying to connect to Litecoin Testnet v4 and got socket recv error 10054. But regular Litecoin works fine.
What I’ve done:

  1. I downloaded an installed Litecone-core for windows.
  2. Start it using “-testnet” option

Latest records from debug.log file

2017-11-20 10:49:04 GUI: Platform customization: "windows"
2017-11-20 10:49:04 GUI: PaymentServer::LoadRootCAs: Loaded 42 root certificates
2017-11-20 10:49:15 Loading addresses from DNS seeds (could take a while)
2017-11-20 10:49:27 23 addresses found from DNS seeds
2017-11-20 10:49:27 dnsseed thread exit
2017-11-20 10:52:24 socket recv error The remote host forcibly broke the existing connection. (10054)
2017-11-20 11:01:57 socket recv error The remote host forcibly broke the existing connection. (10054)
2017-11-20 11:04:40 socket recv error The remote host forcibly broke the existing connection. (10054)

What is wrong?
Could you please help me to understand.

Thanks.