diff --git a/Workspace/client/src/main/java/com/pqt/client/Main.java b/Workspace/client/src/main/java/com/pqt/client/Main.java
index c7240576..7bed42e7 100644
--- a/Workspace/client/src/main/java/com/pqt/client/Main.java
+++ b/Workspace/client/src/main/java/com/pqt/client/Main.java
@@ -5,15 +5,10 @@ import com.pqt.client.gui.modules.account_screen.AccountScreen;
 import com.pqt.client.gui.modules.sale_screen.SaleScreen;
 import com.pqt.client.gui.modules.stat_screen.StatScreen;
 import com.pqt.client.gui.modules.stock_screen.StockScreen;
-import com.pqt.client.gui.ressources.components.generics.others.SideBar;
-import com.pqt.client.gui.ressources.components.generics.others.listeners.ISideBarListener;
 import com.pqt.client.gui.ressources.components.generics.toast.ToastFactory;
 import com.pqt.client.gui.ressources.css.GUICssTool;
 import com.pqt.client.gui.ressources.strings.GUIStringTool;
-import com.pqt.client.module.account.AccountService;
-import com.pqt.client.module.sale.SaleService;
-import com.pqt.client.module.stat.StatService;
-import com.pqt.client.module.stock.StockService;
+import com.pqt.client.module.ClientBackEndModuleManager;
 import javafx.application.Application;
 import javafx.scene.Scene;
 import javafx.stage.Stage;
@@ -26,16 +21,15 @@ public class Main extends Application{
 
     @Override
     public void start(Stage primaryStage) throws Exception {
-        SaleService saleService = new SaleService();
-        StockService stockService = new StockService();
-        AccountService accountService = new AccountService();
-        StatService statService = new StatService();
+        //TODO ajouter écran de préloading
 
-        MainFrame mainFrame = new MainFrame(accountService);
-        mainFrame.addModule(new SaleScreen(accountService, stockService, saleService), true);
-        mainFrame.addModule(new StockScreen(stockService, accountService));
-        mainFrame.addModule(new StatScreen(statService));
-        mainFrame.addModule(new AccountScreen(accountService));
+        ClientBackEndModuleManager moduleManager = new ClientBackEndModuleManager(null);
+
+        MainFrame mainFrame = new MainFrame(moduleManager.getAccountService());
+        mainFrame.addModule(new SaleScreen(moduleManager.getAccountService(), moduleManager.getStockService(), moduleManager.getSaleService()), true);
+        mainFrame.addModule(new StockScreen(moduleManager.getStockService(), moduleManager.getAccountService()));
+        mainFrame.addModule(new StatScreen(moduleManager.getStatService()));
+        mainFrame.addModule(new AccountScreen(moduleManager.getAccountService()));
 
 
         Scene scene = new Scene(mainFrame.getPane(), 800, 600);
diff --git a/Workspace/client/src/main/java/com/pqt/client/gui/main_frame/MainFrameModel.java b/Workspace/client/src/main/java/com/pqt/client/gui/main_frame/MainFrameModel.java
index c8cb5fc7..755269a1 100644
--- a/Workspace/client/src/main/java/com/pqt/client/gui/main_frame/MainFrameModel.java
+++ b/Workspace/client/src/main/java/com/pqt/client/gui/main_frame/MainFrameModel.java
@@ -23,6 +23,11 @@ class MainFrameModel {
                 MainFrameModel.this.fireAccountStatusChangedEvent(status);
             }
 
+            @Override
+            public void onAccountStatusNotChangedEvent(Throwable cause) {
+
+            }
+
             @Override
             public void onAccountListChangedEvent() {
                 MainFrameModel.this.fireAccountCollectionChangedEvent();
diff --git a/Workspace/client/src/main/java/com/pqt/client/gui/modules/sale_screen/SaleScreenModel.java b/Workspace/client/src/main/java/com/pqt/client/gui/modules/sale_screen/SaleScreenModel.java
index 4cfc6d54..8a07a511 100644
--- a/Workspace/client/src/main/java/com/pqt/client/gui/modules/sale_screen/SaleScreenModel.java
+++ b/Workspace/client/src/main/java/com/pqt/client/gui/modules/sale_screen/SaleScreenModel.java
@@ -104,6 +104,11 @@ class SaleScreenModel {
                 fireAccountConnectedStatusUpdateEvent();
             }
 
+            @Override
+            public void onAccountStatusNotChangedEvent(Throwable cause) {
+
+            }
+
             @Override
             public void onAccountListChangedEvent() {
                 fireAccountListUpdatedEvent();
diff --git a/Workspace/client/src/main/java/com/pqt/client/gui/modules/stock_screen/StockScreenModel.java b/Workspace/client/src/main/java/com/pqt/client/gui/modules/stock_screen/StockScreenModel.java
index 365c0648..225fcb4f 100644
--- a/Workspace/client/src/main/java/com/pqt/client/gui/modules/stock_screen/StockScreenModel.java
+++ b/Workspace/client/src/main/java/com/pqt/client/gui/modules/stock_screen/StockScreenModel.java
@@ -34,6 +34,11 @@ class StockScreenModel {
                 StockScreenModel.this.fireConnectedStatusChanged();
             }
 
+            @Override
+            public void onAccountStatusNotChangedEvent(Throwable cause) {
+
+            }
+
             @Override
             public void onAccountListChangedEvent() {
 
diff --git a/Workspace/client/src/main/java/com/pqt/client/module/ClientBackEndModuleManager.java b/Workspace/client/src/main/java/com/pqt/client/module/ClientBackEndModuleManager.java
new file mode 100644
index 00000000..9f2a0fb5
--- /dev/null
+++ b/Workspace/client/src/main/java/com/pqt/client/module/ClientBackEndModuleManager.java
@@ -0,0 +1,41 @@
+package com.pqt.client.module;
+
+import com.pqt.client.module.account.AccountService;
+import com.pqt.client.module.connection.ConnectionService;
+import com.pqt.client.module.query.QueryExecutor;
+import com.pqt.client.module.sale.SaleService;
+import com.pqt.client.module.stat.StatService;
+import com.pqt.client.module.stock.StockService;
+
+public class ClientBackEndModuleManager {
+
+    private SaleService saleService;
+    private StockService stockService;
+    private AccountService accountService;
+    private StatService statService;
+
+    public ClientBackEndModuleManager(String serverUrl) {
+        ConnectionService connectionService = new ConnectionService(serverUrl);
+        QueryExecutor queryExecutor = new QueryExecutor(connectionService);
+        saleService = new SaleService(queryExecutor);
+        stockService = new StockService(queryExecutor);
+        accountService = new AccountService(queryExecutor);
+        statService = new StatService(queryExecutor);
+    }
+
+    public SaleService getSaleService() {
+        return saleService;
+    }
+
+    public StockService getStockService() {
+        return stockService;
+    }
+
+    public AccountService getAccountService() {
+        return accountService;
+    }
+
+    public StatService getStatService() {
+        return statService;
+    }
+}