diff --git a/InstructorsAndTrainees/CMakeLists.txt b/InstructorsAndTrainees/CMakeLists.txt
index d6cc70a..2731772 100644
--- a/InstructorsAndTrainees/CMakeLists.txt
+++ b/InstructorsAndTrainees/CMakeLists.txt
@@ -27,8 +27,6 @@ add_library(InstructorsAndTrainees SHARED
   specialmessagebox/specialmessagebox.cpp
   specialmessagebox/specialmessagebox.h
   specialmessagebox/specialmessagebox.ui
-  specialmessagebox/notifycontroller.cpp
-  specialmessagebox/notifycontroller.h
 
   authorization/dialogauthorization.cpp
   authorization/dialogauthorization.h
@@ -141,6 +139,8 @@ add_library(InstructorsAndTrainees SHARED
   widgets/waitanimationwidget.cpp
   widgets/waitanimationwidget.h
   widgets/waitanimationwidget.ui
+  widgets/widgettools.cpp
+  widgets/widgettools.h
 
   InstructorsAndTrainees.qrc
 )
diff --git a/InstructorsAndTrainees/connectorToServer/connectortoserver.cpp b/InstructorsAndTrainees/connectorToServer/connectortoserver.cpp
index 0dbae16..7f27b0c 100644
--- a/InstructorsAndTrainees/connectorToServer/connectortoserver.cpp
+++ b/InstructorsAndTrainees/connectorToServer/connectortoserver.cpp
@@ -1,9 +1,8 @@
 #include "connectortoserver.h"
 #include <QThread>
 
-ConnectorToServer::ConnectorToServer(QWidget* parentWidget, QObject *parent) :
+ConnectorToServer::ConnectorToServer(QObject *parent) :
     QObject(parent),
-    parentWidget(parentWidget),
     connectionThread(nullptr),
     client(nullptr),
     dataParser(nullptr),
diff --git a/InstructorsAndTrainees/connectorToServer/connectortoserver.h b/InstructorsAndTrainees/connectorToServer/connectortoserver.h
index 9e07b7e..cace4d2 100644
--- a/InstructorsAndTrainees/connectorToServer/connectortoserver.h
+++ b/InstructorsAndTrainees/connectorToServer/connectortoserver.h
@@ -14,7 +14,6 @@
 #include "computer.h"
 #include "classroom.h"
 #include "Datas.h"
-#include "notifycontroller.h"
 #include "streamingversiondata.h"
 
 class ConnectorToServer : public QObject
@@ -22,7 +21,7 @@ class ConnectorToServer : public QObject
     Q_OBJECT
 
 public:
-    explicit ConnectorToServer(QWidget* parentWidget, QObject *parent = nullptr);
+    explicit ConnectorToServer(QObject *parent = nullptr);
     ~ConnectorToServer();
 
 public:
@@ -167,7 +166,6 @@ private:
     void createObjects();
 
 private:
-    QWidget* parentWidget;
     QThread *connectionThread;
     TCPClient *client;
     DataParser *dataParser;
diff --git a/InstructorsAndTrainees/instructorsandtraineeswidget.cpp b/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
index 07c4027..7234dfe 100644
--- a/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
+++ b/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
@@ -7,6 +7,7 @@
 #include "dialogsettings.h"
 #include "specialmessagebox.h"
 #include "hashtools.h"
+#include "widgettools.h"
 
 
 const QString InstructorsAndTraineesWidget::languageENG = "en_EN";
@@ -50,7 +51,7 @@ InstructorsAndTraineesWidget::InstructorsAndTraineesWidget(QWidget *parent) :
 
     setLanguageInterfase();
 
-    connectorToServer = new ConnectorToServer(this);
+    connectorToServer = new ConnectorToServer();
     connect(connectorToServer, &ConnectorToServer::sigLoginResult, this, &InstructorsAndTraineesWidget::slot_checkLoginResult);
     connect(connectorToServer, &ConnectorToServer::sigDeLoginResult, this, &InstructorsAndTraineesWidget::slot_checkDeLoginResult);
     connect(connectorToServer, &ConnectorToServer::sigServerBlocked, this, &InstructorsAndTraineesWidget::slot_ServerBlocked);
@@ -406,7 +407,10 @@ void InstructorsAndTraineesWidget::slot_ConnectedToServer(bool state)
         if(!flSettingsServerIsChanged)
         {
             if(!flTryConnectToServer)
+            {
+                WidgetTools::closeAllChildWidgets(this, "SpecMsgBox");
                 SpecMsgBox::WarningClose(this, tr("The server is not available!"));
+            }
         }
         else
             flSettingsServerIsChanged = false;
diff --git a/InstructorsAndTrainees/specialmessagebox/notifycontroller.cpp b/InstructorsAndTrainees/specialmessagebox/notifycontroller.cpp
deleted file mode 100644
index b4022a6..0000000
--- a/InstructorsAndTrainees/specialmessagebox/notifycontroller.cpp
+++ /dev/null
@@ -1,19 +0,0 @@
-#include <QMessageBox>
-
-#include "notifycontroller.h"
-#include "specialmessagebox.h"
-
-NotifyController::NotifyController(QWidget *parentWidget, QObject *parent) :
-    QObject(parent),
-    parentWidget(parentWidget)
-{
-
-}
-
-void NotifyController::showWarning(QString text, QWidget *parentWidget)
-{
-    if(parentWidget)
-        SpecMsgBox::WarningClose(parentWidget, text);
-    else
-        SpecMsgBox::WarningClose(this->parentWidget, text);
-}
diff --git a/InstructorsAndTrainees/specialmessagebox/notifycontroller.h b/InstructorsAndTrainees/specialmessagebox/notifycontroller.h
deleted file mode 100644
index 638e30b..0000000
--- a/InstructorsAndTrainees/specialmessagebox/notifycontroller.h
+++ /dev/null
@@ -1,20 +0,0 @@
-#ifndef NOTIFYCONTROLLER_H
-#define NOTIFYCONTROLLER_H
-
-#include <QObject>
-#include <QWidget>
-
-class NotifyController : public QObject
-{
-    Q_OBJECT
-public:
-    explicit NotifyController(QWidget *parentWidget = nullptr, QObject *parent = nullptr);
-
-    void showWarning(QString text, QWidget *parentWidget = nullptr);
-
-private:
-    QWidget *parentWidget;
-
-};
-
-#endif // NOTIFYCONTROLLER_H
diff --git a/InstructorsAndTrainees/specialmessagebox/specialmessagebox.cpp b/InstructorsAndTrainees/specialmessagebox/specialmessagebox.cpp
index 68da470..c427873 100644
--- a/InstructorsAndTrainees/specialmessagebox/specialmessagebox.cpp
+++ b/InstructorsAndTrainees/specialmessagebox/specialmessagebox.cpp
@@ -8,6 +8,8 @@ SpecMsgBox::SpecMsgBox(QWidget *parent, TypeSpecMsgBox type, const QString& text
 {
     ui->setupUi(this);
 
+    this->setObjectName("SpecMsgBox");
+
     this->setWindowFlags(this->windowFlags() & ~Qt::WindowContextHelpButtonHint);
 
     if(type == TypeSpecMsgBox::warningYesNo)
diff --git a/InstructorsAndTrainees/tasks/ammtaskswidget.cpp b/InstructorsAndTrainees/tasks/ammtaskswidget.cpp
index d662450..2a7d59a 100644
--- a/InstructorsAndTrainees/tasks/ammtaskswidget.cpp
+++ b/InstructorsAndTrainees/tasks/ammtaskswidget.cpp
@@ -9,6 +9,7 @@
 #include "ui_ammtaskswidget.h"
 #include "checkertask.h"
 #include "specialmessagebox.h"
+#include "widgettools.h"
 
 AMMtasksWidget::AMMtasksWidget(ConnectorToServer* connectorToServer, TypeListTreeAMMFIM type, QWidget *parent) :
     QWidget(parent),
@@ -155,7 +156,7 @@ void AMMtasksWidget::closeChildDlg()
     if(dlgCheckerTask)
         dlgCheckerTask->close();
     if(dlgListSubProc)
-        dlgListSubProc->close();
+        dlgListSubProc->close();    
 }
 
 void AMMtasksWidget::changeEvent(QEvent *event)
diff --git a/InstructorsAndTrainees/widgets/widgettools.cpp b/InstructorsAndTrainees/widgets/widgettools.cpp
new file mode 100644
index 0000000..cc30632
--- /dev/null
+++ b/InstructorsAndTrainees/widgets/widgettools.cpp
@@ -0,0 +1,24 @@
+#include "widgettools.h"
+
+WidgetTools::WidgetTools()
+{
+
+}
+
+// Рекурсивная функция для закрытия всех дочерних виджетов
+void WidgetTools::closeAllChildWidgets(QWidget *parent, QString objName)
+{
+    // Ищем всех дочерних виджетов типа QWidget
+    QObjectList children = parent->children();
+    foreach(auto obj, children)
+    {
+        if (auto wgt = qobject_cast<QWidget*>(obj))
+        { // Проверяем имя объекта
+            if(wgt->objectName() == objName)
+            {
+                wgt->close();   // Закрываем виджет
+            }
+            closeAllChildWidgets(wgt, objName); // Рекурсия для возможных внучатых виджетов
+        }
+    }
+}
diff --git a/InstructorsAndTrainees/widgets/widgettools.h b/InstructorsAndTrainees/widgets/widgettools.h
new file mode 100644
index 0000000..5ca9374
--- /dev/null
+++ b/InstructorsAndTrainees/widgets/widgettools.h
@@ -0,0 +1,16 @@
+#ifndef WIDGETTOOLS_H
+#define WIDGETTOOLS_H
+
+#include <QWidget>
+
+class WidgetTools
+{
+public:
+    WidgetTools();
+
+public:
+    static void closeAllChildWidgets(QWidget* parent, QString objName);
+
+};
+
+#endif // WIDGETTOOLS_H