diff --git a/app/scanner2/mainwindow.cpp b/app/scanner2/mainwindow.cpp
index 151ba951..eece52e7 100644
--- a/app/scanner2/mainwindow.cpp
+++ b/app/scanner2/mainwindow.cpp
@@ -54,6 +54,7 @@
 MainWindow::MainWindow(const QString& appLang, QWidget *parent)
     : QMainWindow(parent)
     , ui(new Ui::MainWindow)
+    , m_canClose(true)
     , m_currLang(appLang)
     , m_versionDll(nullptr)
     , m_admin_loggedIn(false)
@@ -2562,6 +2563,12 @@ void MainWindow::on_act_imageInfo_triggered()
 
 void MainWindow::closeEvent(QCloseEvent *e)
 {
+    if (!m_canClose)
+    {
+        e->ignore();
+        return;
+    }
+
     if (m_isScanning)
     {
         m_closeTip = true;
@@ -4456,6 +4463,7 @@ void MainWindow::on_act_selectDevice_triggered()
     }
 
     this->setEnabled(false);
+    m_canClose = false;
 
     DeviceUser *devUser = m_devUserMgr->OpenDeviceUser();
     if (devUser != nullptr)
@@ -4479,4 +4487,5 @@ void MainWindow::on_act_selectDevice_triggered()
     }
 
     this->setEnabled(true);
+    m_canClose = true;
 }
diff --git a/app/scanner2/mainwindow.h b/app/scanner2/mainwindow.h
index 96259996..7b81f47a 100644
--- a/app/scanner2/mainwindow.h
+++ b/app/scanner2/mainwindow.h
@@ -249,6 +249,7 @@ private:
 
 private:
     Ui::MainWindow *ui;
+    bool m_canClose;
     DeviceUserMgr *m_devUserMgr;
     DeviceUser *m_devUser;
     QAction *m_act_acquireInto2;