diff --git a/InstructorsAndTrainees/commonview.h b/InstructorsAndTrainees/commonview.h
index ea9e755..157044e 100644
--- a/InstructorsAndTrainees/commonview.h
+++ b/InstructorsAndTrainees/commonview.h
@@ -39,6 +39,10 @@ public:
     {
         this->authComplited = authComplited;
     }
+    void clearTree()
+    {
+        treeWidget->clear();
+    }
 
 protected:
     void setArchiveVisible(bool archiveVisible)
diff --git a/InstructorsAndTrainees/instructorsandtraineeswidget.cpp b/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
index 234fbed..b1bcc47 100644
--- a/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
+++ b/InstructorsAndTrainees/instructorsandtraineeswidget.cpp
@@ -38,8 +38,8 @@ InstructorsAndTraineesWidget::InstructorsAndTraineesWidget(QWidget *parent) :
     connect(viewerInstructors, &ViewerInstructors::signal_BlockAutorization, this, &InstructorsAndTraineesWidget::signal_BlockAutorization);
     connect(viewerTrainees, &ViewerTrainees::signal_BlockAutorization, this, &InstructorsAndTraineesWidget::signal_BlockAutorization);
 
-    connect(connectorToServer,&ConnectorToServer::signal_UpdateDB,viewerInstructors,&ViewerInstructors::slot_NeedUpdateUI);
-    connect(connectorToServer,&ConnectorToServer::signal_UpdateDB,viewerTrainees,&ViewerTrainees::slot_NeedUpdateUI);
+    //connect(connectorToServer,&ConnectorToServer::signal_UpdateDB,viewerInstructors,&ViewerInstructors::slot_NeedUpdateUI);
+    //connect(connectorToServer,&ConnectorToServer::signal_UpdateDB,viewerTrainees,&ViewerTrainees::slot_NeedUpdateUI);
 
     connect(connectorToServer,&ConnectorToServer::signal_ConnectedToServer,this,&InstructorsAndTraineesWidget::slot_ConnectedToServer);
 
@@ -194,7 +194,7 @@ void InstructorsAndTraineesWidget::checkDeLoginResult(ServerDeAuthorization *ser
         viewerInstructors->setAuthComplited(false);
         viewerTrainees->setAuthComplited(false);
 
-        Q_EMIT signal_NeedUpdateUI(true, false);
+        //Q_EMIT signal_NeedUpdateUI(true, false);
 
         ui->btnAuthorizationInstructor->setText(tr("Authorization Instructor"));
         updateLabelLoggedInInstructor("","");
@@ -225,6 +225,9 @@ void InstructorsAndTraineesWidget::slot_ConnectedToServer(bool state)
         ui->btnAuthorizationInstructor->setChecked(false);
         ui->btnSetVersion->hide();
         ui->lblDBisConnected->setPixmap(QPixmap(QStringLiteral(":/resources/icons/circleGray.png")));
+
+        viewerTrainees->clearTree();
+        viewerInstructors->clearTree();
     }
 }
 
@@ -284,6 +287,8 @@ void InstructorsAndTraineesWidget::on_btnAuthorizationInstructor_clicked()
     {//Авторизация Инструктора локальная (Администратора)
         if(authorizationInstructorDialog(this))
         {
+            connect(connectorToServer,&ConnectorToServer::signal_UpdateDB,viewerInstructors,&ViewerInstructors::slot_NeedUpdateUI);
+            connect(connectorToServer,&ConnectorToServer::signal_UpdateDB,viewerTrainees,&ViewerTrainees::slot_NeedUpdateUI);
         }
         else
             ui->btnAuthorizationInstructor->setChecked(false);
@@ -294,6 +299,11 @@ void InstructorsAndTraineesWidget::on_btnAuthorizationInstructor_clicked()
         {
             if(deAuthorizationInstructor(loginInstructorLoggedInLocal))
             {
+                disconnect(connectorToServer,&ConnectorToServer::signal_UpdateDB,viewerInstructors,&ViewerInstructors::slot_NeedUpdateUI);
+                disconnect(connectorToServer,&ConnectorToServer::signal_UpdateDB,viewerTrainees,&ViewerTrainees::slot_NeedUpdateUI);
+
+                viewerTrainees->clearTree();
+                viewerInstructors->clearTree();
             }
             else
                 ui->btnAuthorizationInstructor->setChecked(true);