diff --git a/.gitignore b/.gitignore
index 0dafa6e4..1875ccf8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -42,6 +42,7 @@ Output/Songs
 /ClientServerLib/ClientServerLib/ClientServerLib.csproj.user
 /ClientServerLib/ClientServerLib/bin/Debug/ClientServerLib.dll
 /ClientServerLib/ClientTest/bin/Debug/ClientServerLib.dll
+/ClientServerLib/ClientTest/bin/Release/ClientServerLib.dll
 /ClientServerLib/ClientServerLib/bin/ClientServerLib.dll
 ClientTest.exe
 *.vshost.*
diff --git a/ClientServerLib/ClientServerLib/ClientServerLib.csproj b/ClientServerLib/ClientServerLib/ClientServerLib.csproj
index 8264baeb..f0453376 100644
--- a/ClientServerLib/ClientServerLib/ClientServerLib.csproj
+++ b/ClientServerLib/ClientServerLib/ClientServerLib.csproj
@@ -31,6 +31,10 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="Newtonsoft.Json, Version=4.5.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>bin\Newtonsoft.Json.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Windows.Forms" />
diff --git a/ClientServerLib/ClientServerLib/Vocaluxe/CCommands.cs b/ClientServerLib/ClientServerLib/Vocaluxe/CCommands.cs
index 274d49b0..49e078e1 100644
--- a/ClientServerLib/ClientServerLib/Vocaluxe/CCommands.cs
+++ b/ClientServerLib/ClientServerLib/Vocaluxe/CCommands.cs
@@ -2,16 +2,17 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.IO;
-using System.Runtime.Serialization.Formatters;
-using System.Runtime.Serialization.Formatters.Binary;
 using System.Text;
 using System.Security.Cryptography;
 
+using Newtonsoft.Json;
 
 namespace Vocaluxe.Base.Server
 {
     public static class CCommands
     {
+        private static UTF8Encoding encoder = new UTF8Encoding();
+
         public static SHA256Managed SHA256 = new SHA256Managed();
 
         public const int ResponseOK = 1;
@@ -75,9 +76,8 @@ namespace Vocaluxe.Base.Server
             byte[] data;
             using (MemoryStream ms = new MemoryStream())
             {
-                BinaryFormatter formatter = new BinaryFormatter();
-                formatter.Serialize(ms, obj);
-                data = ms.ToArray();
+                string json = JsonConvert.SerializeObject(obj);
+                data = encoder.GetBytes(json);
             }
             stream.Write(data, 0, data.Length);
             return stream.ToArray();
@@ -99,11 +99,10 @@ namespace Vocaluxe.Base.Server
             {
                 try
                 {
-                    BinaryFormatter formatter = new BinaryFormatter();
-                    obj = (T)formatter.Deserialize(ms);
+                    obj = JsonConvert.DeserializeObject<T>(encoder.GetString(data));
                     return true;
                 }
-                catch (Exception e)
+                catch
                 {
                     return false;
                 }
diff --git a/ClientServerLib/ClientServerLib/Vocaluxe/VocaluxeStructs.cs b/ClientServerLib/ClientServerLib/Vocaluxe/VocaluxeStructs.cs
index 76af669d..3c6eb627 100644
--- a/ClientServerLib/ClientServerLib/Vocaluxe/VocaluxeStructs.cs
+++ b/ClientServerLib/ClientServerLib/Vocaluxe/VocaluxeStructs.cs
@@ -2,7 +2,6 @@
 
 namespace Vocaluxe.Base.Server
 {
-    [Serializable]
     public struct SLoginData
     {
         public byte[] SHA256;
diff --git a/Output/ClientServerLib.dll b/Output/ClientServerLib.dll
index 13f422d8..2e84f868 100644
Binary files a/Output/ClientServerLib.dll and b/Output/ClientServerLib.dll differ
diff --git a/Output/Newtonsoft.Json.dll b/Output/Newtonsoft.Json.dll
new file mode 100644
index 00000000..a1c39382
Binary files /dev/null and b/Output/Newtonsoft.Json.dll differ