diff --git a/AiCoreUnitTest/Ollama2FacadeTest.cs b/AiCoreUnitTest/Ollama2FacadeTest.cs
index c9fb6fe4f..5298aaa92 100644
--- a/AiCoreUnitTest/Ollama2FacadeTest.cs
+++ b/AiCoreUnitTest/Ollama2FacadeTest.cs
@@ -1,10 +1,7 @@
 using AICore.Facade.LLM;
 using BeWo.Service.Core;
+using BS.Shared.Core;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
-using Microsoft.VisualStudio.TestTools.UnitTesting.Logging;
-using System;
-using System.Net;
-using System.Runtime.InteropServices;
 
 namespace AiCoreUnitTest
 {
diff --git a/Host/Web.Deploy.config b/Host/Web.Deploy.config
index ea62c0f35..93ace719d 100644
--- a/Host/Web.Deploy.config
+++ b/Host/Web.Deploy.config
@@ -139,6 +139,14 @@
         <param name="ConversionPattern" value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
       </layout>
     </appender>
+
+    <logger name="NHibernate">
+      <level value="ERROR" />
+    </logger>
+
+    <logger name="NHibernate.SQL">
+      <level value="ERROR" />
+    </logger>
   </log4net>
 
 
diff --git a/Host/Web.config b/Host/Web.config
index 74409a0cc..c49c59f7b 100644
--- a/Host/Web.config
+++ b/Host/Web.config
@@ -144,6 +144,14 @@
         <param name="ConversionPattern" value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
       </layout>
     </appender>
+
+    <logger name="NHibernate">
+      <level value="ERROR" />
+    </logger>
+
+    <logger name="NHibernate.SQL">
+      <level value="ERROR" />
+    </logger>
   </log4net>
   <!--
     Eine Beschreibung der Änderungen von 'web.config' finden Sie unter 'http://go.microsoft.com/fwlink/?LinkId=235367'.
diff --git a/Server/Components/AICore/AICore.csproj b/Server/Components/AICore/AICore.csproj
index 643235c47..e6b7b8ff5 100644
--- a/Server/Components/AICore/AICore.csproj
+++ b/Server/Components/AICore/AICore.csproj
@@ -31,6 +31,9 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="log4net">
+      <HintPath>..\..\..\Lib\log4net.dll</HintPath>
+    </Reference>
     <Reference Include="Microsoft.Bcl.AsyncInterfaces, Version=9.0.0.7, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51, processorArchitecture=MSIL">
       <HintPath>..\..\..\packages\Microsoft.Bcl.AsyncInterfaces.9.0.7\lib\net462\Microsoft.Bcl.AsyncInterfaces.dll</HintPath>
     </Reference>
diff --git a/Server/Components/AICore/Facade/LLM/OllamaApiClient.cs b/Server/Components/AICore/Facade/LLM/OllamaApiClient.cs
index 92ab2b5ae..bcbb187c8 100644
--- a/Server/Components/AICore/Facade/LLM/OllamaApiClient.cs
+++ b/Server/Components/AICore/Facade/LLM/OllamaApiClient.cs
@@ -10,16 +10,21 @@ using System.Net;
 using BeWo.ServerUtils.ApiFacade;
 using BS.Shared;
 using BS.Shared.Logger;
+using log4net;
+using System.Runtime.CompilerServices;
+using BS.Shared.Core;
 
 namespace AICore.Facade.LLM
 {
 	public class OllamaApiClient : BaseLLMApiClient
 	{
 		private AiModelSource _aiModelSource;
+		private ILog _logger;
 
 		public OllamaApiClient(string base_url, string api_key, AiModelSource modelSource = AiModelSource.ollama) : base(base_url, api_key)
 		{
 			_aiModelSource = modelSource;
+			_logger = LoggerUtils.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
 
 			if (modelSource != AiModelSource.ollama && modelSource != AiModelSource.ollama2)
 				throw new NotImplementedException("err4548975");
@@ -29,6 +34,8 @@ namespace AICore.Facade.LLM
 		{
 			var models = new List<AiModelDC>();
 
+			_logger.Info($"GetModels: Hole aktuelle Modelle von '{_aiModelSource}'");
+
 			var response_format = new
 			{
 				models = new[]
@@ -50,11 +57,17 @@ namespace AICore.Facade.LLM
 
 			if (!response.Success)
 			{
+				_logger.Error(response);
+				_logger.Error(response.ToErrorString());
 				throw new NotImplementedException();
 			}
 
 			var data = response.Data.models.Select(x => new AiModelDC(_aiModelSource, x.name, x.details.max_context_size));
 
+			var log_str = string.Join("", data.Select(x => $"\r\n\t\t\t\t- {x.ToString()}"));
+
+			_logger.Info($"GetModels: Aktuelle Modelle von '{_aiModelSource}': {log_str}");
+
 			return ApiResponse<IEnumerable<AiModelDC>>.SuccessResponse(data);
 		}
 
@@ -68,7 +81,7 @@ namespace AICore.Facade.LLM
 
 			if(logger is object)
 			{
-				logger.Log(LogLevel.Debug, "Request:");
+				logger.Log(LogLevel.Debug, "Chat Request:");
 				logger.LogJson(LogLevel.Debug, _PostClientFacade.JsonObject);
 			}
 
@@ -101,7 +114,7 @@ namespace AICore.Facade.LLM
 
 			if(logger is object)
 			{
-				logger.Log(LogLevel.Debug, "Response:");
+				logger.Log(LogLevel.Debug, "Chat Response:");
 				logger.LogJson(LogLevel.Debug, response);
 			}
 
diff --git a/Service/Core/ServiceLogger.cs b/Service/Core/ServiceLogger.cs
index 06be8e14c..e22ab4b75 100644
--- a/Service/Core/ServiceLogger.cs
+++ b/Service/Core/ServiceLogger.cs
@@ -23,12 +23,5 @@ namespace BeWo.Service.Core
 
 			return new FileLogger(filePath);
 		}
-
-		public static ILog GetLogger(Type declaringType)
-		{
-			log4net.Config.XmlConfigurator.Configure();
-
-			return log4net.LogManager.GetLogger(declaringType);
-		}
 	}
 }
diff --git a/Service/Multitenancy/MultitenancyBehaviorExtension.cs b/Service/Multitenancy/MultitenancyBehaviorExtension.cs
index 9d44caa02..ad07c34b0 100644
--- a/Service/Multitenancy/MultitenancyBehaviorExtension.cs
+++ b/Service/Multitenancy/MultitenancyBehaviorExtension.cs
@@ -1,4 +1,5 @@
-using System;
+using BS.Shared.Core;
+using System;
 using System.ServiceModel.Configuration;
 
 namespace BeWo.Service.Multitenancy
@@ -15,6 +16,8 @@ namespace BeWo.Service.Multitenancy
 
         protected override object CreateBehavior()
         {
+            LoggerUtils.InitLogger();
+
             return new MultitenancyEndpointBehavior();
         }
     }
diff --git a/Service/ServiceBehavior/JsonError/JsonErrorHandler.cs b/Service/ServiceBehavior/JsonError/JsonErrorHandler.cs
index 8cb23ef87..aba5e5ff3 100644
--- a/Service/ServiceBehavior/JsonError/JsonErrorHandler.cs
+++ b/Service/ServiceBehavior/JsonError/JsonErrorHandler.cs
@@ -1,5 +1,6 @@
 using BeWo.Data.Access;
 using BeWo.Service.Core;
+using BS.Shared.Core;
 using System;
 using System.Collections.Generic;
 using System.Configuration;
@@ -30,7 +31,7 @@ namespace BeWo.Service.ServiceBehavior.JsonError
 
 	public class JsonErrorHandler : IErrorHandler
 	{
-		private static readonly log4net.ILog log = ServiceLogger.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+		private static readonly log4net.ILog log = LoggerUtils.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
 
 		public void ProvideFault(Exception error, MessageVersion version, ref Message fault)
 		{
diff --git a/Service/ServiceBehavior/WCFError/WCFErrorHandler.cs b/Service/ServiceBehavior/WCFError/WCFErrorHandler.cs
index 483000045..5eb4bb18a 100644
--- a/Service/ServiceBehavior/WCFError/WCFErrorHandler.cs
+++ b/Service/ServiceBehavior/WCFError/WCFErrorHandler.cs
@@ -1,4 +1,5 @@
 using BeWo.Service.Core;
+using BS.Shared.Core;
 using DevExpress.CodeParser.Diagnostics;
 using log4net;
 using System;
@@ -19,7 +20,7 @@ namespace BeWo.Service.ServiceBehavior.WCFError
 {
 	public class WCFErrorHandler : IErrorHandler
 	{
-		private static readonly log4net.ILog log = ServiceLogger.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
+		private static readonly log4net.ILog log = LoggerUtils.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
 
 		public bool HandleError(Exception exception)
 		{
@@ -31,7 +32,7 @@ namespace BeWo.Service.ServiceBehavior.WCFError
 			// Logge in File
 			log.Error(error);
 
-			var wcfError = Utils.CreateBeWoFaultException(error);
+			var wcfError = Core.Utils.CreateBeWoFaultException(error);
 
 			var fault = wcfError.CreateMessageFault();
 
diff --git a/Service/ServiceProxy/ServiceFacade.cs b/Service/ServiceProxy/ServiceFacade.cs
index 8803c75da..ca6c49720 100644
--- a/Service/ServiceProxy/ServiceFacade.cs
+++ b/Service/ServiceProxy/ServiceFacade.cs
@@ -6,6 +6,7 @@ using System.Threading.Tasks;
 using AICore.Facade.LLM;
 using BeWo.Service.Core;
 using BS.Shared;
+using BS.Shared.Core;
 
 namespace BeWo.Service.ServiceProxy
 {
@@ -24,7 +25,7 @@ namespace BeWo.Service.ServiceProxy
 		private static readonly Lazy<OllamaApiClient> _Ollama2ApiClient = new Lazy<OllamaApiClient>(() 
 			=> new OllamaApiClient(
 				MergedConfig.GetSetting(WebConfigSetting.Ollama2Url), 
-				MergedConfig.GetSecretSetting(WebSecretConfigSetting.Ollama2Key), 
+				MergedConfig.GetSecretSetting(WebSecretConfigSetting.Ollama2Key),
 				AiModelSource.ollama2));
 
 		private static readonly Lazy<XRechnungApiClient> _XRechnungFacade = new Lazy<XRechnungApiClient>(() 
diff --git a/Shared/Core/LoggerUtils.cs b/Shared/Core/LoggerUtils.cs
new file mode 100644
index 000000000..85e631dd6
--- /dev/null
+++ b/Shared/Core/LoggerUtils.cs
@@ -0,0 +1,30 @@
+using log4net;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BS.Shared.Core
+{
+	public static class LoggerUtils
+	{
+		private static bool _LoggerInit = false;
+
+		public static void InitLogger()
+		{
+			if(_LoggerInit) return;
+
+			log4net.Config.XmlConfigurator.Configure();
+
+			_LoggerInit = true;
+		}
+
+		public static ILog GetLogger(Type declaringType)
+		{
+			InitLogger();
+
+			return log4net.LogManager.GetLogger(declaringType);
+		}
+	}
+}
diff --git a/Shared/Shared.csproj b/Shared/Shared.csproj
index a53e6e425..554903ba3 100644
--- a/Shared/Shared.csproj
+++ b/Shared/Shared.csproj
@@ -103,6 +103,9 @@
     <Reference Include="DevExpress.XtraReports.v23.2, Version=23.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a, processorArchitecture=MSIL" />
     <Reference Include="DevExpress.XtraScheduler.v23.2.Core.Desktop, Version=23.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a, processorArchitecture=MSIL" />
     <Reference Include="DevExpress.XtraScheduler.v23.2.Core, Version=23.2.4.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a, processorArchitecture=MSIL" />
+    <Reference Include="log4net">
+      <HintPath>..\Lib\log4net.dll</HintPath>
+    </Reference>
     <Reference Include="Newtonsoft.Json, Version=13.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
       <HintPath>..\packages\Newtonsoft.Json.13.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
     </Reference>
@@ -149,6 +152,7 @@
     <Compile Include="Core\Facade\HttpClientFacade.cs" />
     <Compile Include="Core\Facade\JsonHttpClientFacade.cs" />
     <Compile Include="Core\JsonUtils.cs" />
+    <Compile Include="Core\LoggerUtils.cs" />
     <Compile Include="Core\MailUtils.cs" />
     <Compile Include="Core\Rule\GkvRules.cs" />
     <Compile Include="Core\SecurityUtils.cs" />