diff --git a/MinecraftClient/MinecraftCom.cs b/MinecraftClient/MinecraftCom.cs
index f8bb436f..eba92574 100644
--- a/MinecraftClient/MinecraftCom.cs
+++ b/MinecraftClient/MinecraftCom.cs
@@ -15,7 +15,7 @@ namespace MinecraftClient
     {
         #region Login to Minecraft.net, Obtaining a session ID
 
-        public enum LoginResult { Error, Success, WrongPassword, Blocked, AccountMigrated, NotPremium };
+        public enum LoginResult { Error, Success, WrongPassword, Blocked, AccountMigrated, NotPremium, BadRequest };
 
         /// <summary>
         /// Allows to login to a premium Minecraft account, and retrieve the session ID.
@@ -32,11 +32,12 @@ namespace MinecraftClient
                 Console.ForegroundColor = ConsoleColor.DarkGray;
                 WebClient wClient = new WebClient();
                 Console.WriteLine("https://login.minecraft.net/?user=" + user + "&password=<******>&version=13");
-                string result = wClient.DownloadString("https://login.minecraft.net/?user=" + user + "&password=" + pass + "&version=13");
+                string result = Encoding.ASCII.GetString(wClient.UploadValues("https://login.minecraft.net/", new System.Collections.Specialized.NameValueCollection() { { "user", user }, { "password", pass }, { "version", "13" } } ));
                 outdata = result;
                 Console.WriteLine(result);
                 Console.ForegroundColor = ConsoleColor.Gray;
                 if (result == "Bad login") { return LoginResult.WrongPassword; }
+                if (result == "Bad request") { return LoginResult.BadRequest; }
                 if (result == "User not premium") { return LoginResult.NotPremium; }
                 if (result == "Too many failed logins") { return LoginResult.Blocked; }
                 if (result == "Account migrated, use e-mail as username.") { return LoginResult.AccountMigrated; }
diff --git a/MinecraftClient/Program.cs b/MinecraftClient/Program.cs
index c81daa0e..b7c456f3 100644
--- a/MinecraftClient/Program.cs
+++ b/MinecraftClient/Program.cs
@@ -251,6 +251,7 @@ namespace MinecraftClient
                 {
                     case MinecraftCom.LoginResult.AccountMigrated: Console.WriteLine("Account migrated, use e-mail as username."); break;
                     case MinecraftCom.LoginResult.Blocked: Console.WriteLine("Too many failed logins. Please try again later."); break;
+                    case MinecraftCom.LoginResult.BadRequest: Console.WriteLine("Login attempt rejected: Bad request."); break;
                     case MinecraftCom.LoginResult.WrongPassword: Console.WriteLine("Incorrect password."); break;
                     case MinecraftCom.LoginResult.NotPremium: Console.WriteLine("User not premium."); break;
                     case MinecraftCom.LoginResult.Error: Console.WriteLine("Network error."); break;