Cant log in again after first log in

I installed the installer and exited it from the icon in the tray and then when i wanted to log in again this message popped up :

login error: System.InvalidOperationException: Error connection
---> System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host..
---> System.Net.Sockets.SocketException (10054): An existing connection was forcibly closed by the remote host.
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
at Ecng.Serialization.BinaryHelper.ReadBytes(Stream stream, Byte[] buffer, Int32 len, Int32 pos)
at Ecng.Serialization.BinaryHelper.ReadByteEx(Stream stream, Byte[] buffer)
at StockSharp.Fix.Native.BaseFixReader.ReadByte()
at StockSharp.Fix.Native.TextFixReader.ReadTag()
at StockSharp.Fix.Native.Extensions.#=zmNphM38=(IFixReader #=zAFMNCKw=, FixTags #=zuTwty2dU1f_X)
at StockSharp.Fix.Native.Extensions.ReadHeader(IFixReader reader, Boolean skipBeginString, String expectedVersion)
at StockSharp.Fix.Dialects.BaseFixDialect.#=zOZSN7MnkrZYC94p6ghmgzJ2DwwhU_YSxCv$hU7I6RNM5(Action`1 #=zAe1JROC8QqgH)
at StockSharp.Fix.FixMessageAdapter.#=zZ$vmI14cpnIp(IFixDialect #=zn1X5CQK8tqBK, Int32 #=zFkCjxv8ae_x4cFmu5ib52Jk=)
--- End of inner exception stack trace ---
at StockSharp.Algo.TraderHelper.<>c__DisplayClass135_0.<DoConnect>b__1()
at Ecng.Common.Converter.<>c__DisplayClass22_0.<DoInCulture>b__0()
at Ecng.Common.Converter.DoInCulture[T](CultureInfo cultureInfo, Func`1 func)
at Ecng.Common.Converter.DoInCulture(CultureInfo cultureInfo, Action action)
at StockSharp.Algo.TraderHelper.DoConnect(IMessageAdapter adapter, IEnumerable`1 requests, Boolean waitResponse, Func`2 newMessage)
at StockSharp.Algo.TraderHelper.Download[TResult](IMessageAdapter adapter, Message request)
at StockSharp.Community.FIX.BaseFixClient.Do[TResult](Message message)
at StockSharp.Community.FIX.AuthenticationClient.Login()
at StockSharp.Community.FIX.AuthenticationClient.StockSharp.Community.IAuthenticationClient.Login()
at StockSharp.Installer.ProfileHelper.TryLogin(ServerCredentials cred, Boolean force)
at StockSharp.Installer.ProfileHelper.LoginAsync()


I would appreciate your help as now I cant even uninstall the programm