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$hU7I6RNM5(Action1 #=zAe1JROC8QqgH) at StockSharp.Fix.FixMessageAdapter.#=zZ$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(CultureInfo cultureInfo, Func1 func) at Ecng.Common.Converter.DoInCulture(CultureInfo cultureInfo, Action action) at StockSharp.Algo.TraderHelper.DoConnect(IMessageAdapter adapter, IEnumerable1 requests, Boolean waitResponse, Func2 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