diff --git a/Source/Core/DolphinQt/Config/ControllersWindow.cpp b/Source/Core/DolphinQt/Config/ControllersWindow.cpp
index 8570b6ff18..fbedd80b03 100644
--- a/Source/Core/DolphinQt/Config/ControllersWindow.cpp
+++ b/Source/Core/DolphinQt/Config/ControllersWindow.cpp
@@ -330,6 +330,7 @@ void ControllersWindow::OnBluetoothPassthroughResetPressed()
   {
     QMessageBox error(this);
     error.setIcon(QMessageBox::Warning);
+    error.setWindowModality(Qt::WindowModal);
     error.setWindowTitle(tr("Warning"));
     error.setText(tr("Saved Wii Remote pairings can only be reset when a Wii game is running."));
     error.exec();
@@ -351,6 +352,7 @@ void ControllersWindow::OnBluetoothPassthroughSyncPressed()
   {
     QMessageBox error(this);
     error.setIcon(QMessageBox::Warning);
+    error.setWindowModality(Qt::WindowModal);
     error.setWindowTitle(tr("Warning"));
     error.setText(tr("A sync can only be triggered when a Wii game is running."));
     error.exec();
diff --git a/Source/Core/DolphinQt/Config/Mapping/MappingWindow.cpp b/Source/Core/DolphinQt/Config/Mapping/MappingWindow.cpp
index c1a5a034ee..549122d0db 100644
--- a/Source/Core/DolphinQt/Config/Mapping/MappingWindow.cpp
+++ b/Source/Core/DolphinQt/Config/Mapping/MappingWindow.cpp
@@ -161,6 +161,7 @@ void MappingWindow::OnDeleteProfilePressed()
   {
     QMessageBox error(this);
     error.setIcon(QMessageBox::Critical);
+    error.setWindowModality(Qt::WindowModal);
     error.setWindowTitle(tr("Error"));
     error.setText(tr("The profile '%1' does not exist").arg(profile_name));
     error.exec();
@@ -170,6 +171,7 @@ void MappingWindow::OnDeleteProfilePressed()
   QMessageBox confirm(this);
 
   confirm.setIcon(QMessageBox::Warning);
+  confirm.setWindowModality(Qt::WindowModal);
   confirm.setWindowTitle(tr("Confirm"));
   confirm.setText(tr("Are you sure that you want to delete '%1'?").arg(profile_name));
   confirm.setInformativeText(tr("This cannot be undone!"));
@@ -186,6 +188,7 @@ void MappingWindow::OnDeleteProfilePressed()
 
   QMessageBox result(this);
   result.setIcon(QMessageBox::Information);
+  result.setWindowModality(Qt::WindowModal);
   result.setWindowTitle(tr("Success"));
   result.setText(tr("Successfully deleted '%1'.").arg(profile_name));
 }
diff --git a/Source/Core/DolphinQt/FIFO/FIFOPlayerWindow.cpp b/Source/Core/DolphinQt/FIFO/FIFOPlayerWindow.cpp
index dec1c34be4..9f4d8e281c 100644
--- a/Source/Core/DolphinQt/FIFO/FIFOPlayerWindow.cpp
+++ b/Source/Core/DolphinQt/FIFO/FIFOPlayerWindow.cpp
@@ -204,7 +204,12 @@ void FIFOPlayerWindow::SaveRecording()
   bool result = file->Save(path.toStdString());
 
   if (!result)
-    QMessageBox::critical(this, tr("Error"), tr("Failed to save FIFO log."));
+  {
+    QMessageBox msg(QMessageBox::Critical, tr("Error"), tr("Failed to save FIFO log."),
+                    QMessageBox::Ok, this);
+    msg.setWindowModality(Qt::WindowModal);
+    msg.exec();
+  }
 }
 
 void FIFOPlayerWindow::StartRecording()
diff --git a/Source/Core/DolphinQt/GCMemcardManager.cpp b/Source/Core/DolphinQt/GCMemcardManager.cpp
index a74a5dc01e..a130e4c333 100644
--- a/Source/Core/DolphinQt/GCMemcardManager.cpp
+++ b/Source/Core/DolphinQt/GCMemcardManager.cpp
@@ -306,7 +306,10 @@ void GCMemcardManager::ExportFiles(bool prompt)
 
   QString text = count == 1 ? tr("Successfully exported the save file.") :
                               tr("Successfully exported the %1 save files.").arg(count);
-  QMessageBox::information(this, tr("Success"), text);
+  QMessageBox msg(QMessageBox::Information, tr("Success"), text, QMessageBox::Ok, this);
+  msg.setWindowModality(Qt::WindowModal);
+
+  msg.exec();
 }
 
 void GCMemcardManager::ExportAllFiles()
@@ -330,7 +333,10 @@ void GCMemcardManager::ImportFile()
 
   if (result != SUCCESS)
   {
-    QMessageBox::critical(this, tr("Import failed"), tr("Failed to import \"%1\".").arg(path));
+    QMessageBox msg(QMessageBox::Critical, tr("Import failed"),
+                    tr("Failed to import \"%1\".").arg(path), QMessageBox::Ok, this);
+    msg.setWindowModality(Qt::WindowModal);
+    msg.exec();
     return;
   }
 
@@ -355,7 +361,12 @@ void GCMemcardManager::CopyFiles()
     const auto result = m_slot_memcard[!m_active_slot]->CopyFrom(*memcard, file_index);
 
     if (result != SUCCESS)
-      QMessageBox::warning(this, tr("Copy failed"), tr("Failed to copy file"));
+    {
+      QMessageBox msg(QMessageBox::Warning, tr("Copy failed"), tr("Failed to copy file"),
+                      QMessageBox::Ok, this);
+      msg.setWindowModality(Qt::WindowModal);
+      msg.exec();
+    }
   }
 
   for (int i = 0; i < SLOT_COUNT; i++)
@@ -379,8 +390,12 @@ void GCMemcardManager::DeleteFiles()
   {
     QString text = count == 1 ? tr("Do you want to delete the selected save file?") :
                                 tr("Do you want to delete the %1 selected save files?").arg(count);
-    auto response =
-        QMessageBox::warning(this, tr("Question"), text, QMessageBox::Yes | QMessageBox::Abort);
+
+    QMessageBox msg(QMessageBox::Warning, tr("Question"), text,
+                    QMessageBox::Yes | QMessageBox::Abort, this);
+    msg.setWindowModality(Qt::WindowModal);
+
+    auto response = msg.exec();
 
     if (response == QMessageBox::Abort)
       return;
@@ -396,13 +411,25 @@ void GCMemcardManager::DeleteFiles()
   for (int file_index : file_indices)
   {
     if (memcard->RemoveFile(file_index) != SUCCESS)
-      QMessageBox::warning(this, tr("Remove failed"), tr("Failed to remove file"));
+    {
+      QMessageBox msg(QMessageBox::Warning, tr("Remove failed"), tr("Failed to remove file"),
+                      QMessageBox::Ok, this);
+      msg.setWindowModality(Qt::WindowModal);
+      msg.exec();
+    }
   }
 
   if (!memcard->Save())
+  {
     PanicAlertT("File write failed");
+  }
   else
-    QMessageBox::information(this, tr("Success"), tr("Successfully deleted files."));
+  {
+    QMessageBox msg(QMessageBox::Information, tr("Success"), tr("Successfully deleted files."),
+                    QMessageBox::Ok, this);
+    msg.setWindowModality(Qt::WindowModal);
+    msg.exec();
+  }
 
   UpdateSlotTable(m_active_slot);
   UpdateActions();
diff --git a/Source/Core/DolphinQt/Settings/GeneralPane.cpp b/Source/Core/DolphinQt/Settings/GeneralPane.cpp
index 78ec034fb3..f2af4c84c5 100644
--- a/Source/Core/DolphinQt/Settings/GeneralPane.cpp
+++ b/Source/Core/DolphinQt/Settings/GeneralPane.cpp
@@ -324,6 +324,7 @@ void GeneralPane::GenerateNewIdentity()
   DolphinAnalytics::Instance()->ReloadConfig();
   QMessageBox message_box(this);
   message_box.setIcon(QMessageBox::Information);
+  message_box.setWindowModality(Qt::WindowModal);
   message_box.setWindowTitle(tr("Identity Generation"));
   message_box.setText(tr("New identity generated."));
   message_box.exec();
diff --git a/Source/Core/DolphinQt/Settings/InterfacePane.cpp b/Source/Core/DolphinQt/Settings/InterfacePane.cpp
index ad808e9f08..747f185bbe 100644
--- a/Source/Core/DolphinQt/Settings/InterfacePane.cpp
+++ b/Source/Core/DolphinQt/Settings/InterfacePane.cpp
@@ -269,9 +269,12 @@ void InterfacePane::OnSaveConfig()
   if (new_language != SConfig::GetInstance().m_InterfaceLanguage)
   {
     SConfig::GetInstance().m_InterfaceLanguage = new_language;
-    QMessageBox::information(
-        this, tr("Restart Required"),
-        tr("You must restart Dolphin in order for the change to take effect."));
+    QMessageBox msg(QMessageBox::Information, tr("Restart Required"),
+                    tr("You must restart Dolphin in order for the change to take effect."),
+                    QMessageBox::Ok, this);
+
+    msg.setWindowModality(Qt::WindowModal);
+    msg.exec();
   }
 
   const bool use_covers = m_checkbox_use_covers->isChecked();
diff --git a/Source/Core/DolphinQt/Settings/USBDeviceAddToWhitelistDialog.cpp b/Source/Core/DolphinQt/Settings/USBDeviceAddToWhitelistDialog.cpp
index 5f055fec69..05811bc34b 100644
--- a/Source/Core/DolphinQt/Settings/USBDeviceAddToWhitelistDialog.cpp
+++ b/Source/Core/DolphinQt/Settings/USBDeviceAddToWhitelistDialog.cpp
@@ -131,6 +131,7 @@ void USBDeviceAddToWhitelistDialog::AddUSBDeviceToWhitelist()
     // i18n: Here, VID means Vendor ID (for a USB device).
     QMessageBox vid_warning_box(this);
     vid_warning_box.setIcon(QMessageBox::Warning);
+    vid_warning_box.setWindowModality(Qt::WindowModal);
     vid_warning_box.setWindowTitle(tr("USB Whitelist Error"));
     // i18n: Here, VID means Vendor ID (for a USB device).
     vid_warning_box.setText(tr("The entered VID is invalid."));
@@ -143,6 +144,7 @@ void USBDeviceAddToWhitelistDialog::AddUSBDeviceToWhitelist()
     // i18n: Here, PID means Product ID (for a USB device).
     QMessageBox pid_warning_box(this);
     pid_warning_box.setIcon(QMessageBox::Warning);
+    pid_warning_box.setWindowModality(Qt::WindowModal);
     pid_warning_box.setWindowTitle(tr("USB Whitelist Error"));
     // i18n: Here, PID means Product ID (for a USB device).
     pid_warning_box.setText(tr("The entered PID is invalid."));
@@ -156,8 +158,12 @@ void USBDeviceAddToWhitelistDialog::AddUSBDeviceToWhitelist()
 
   if (SConfig::GetInstance().IsUSBDeviceWhitelisted({vid, pid}))
   {
-    QErrorMessage* error = new QErrorMessage();
-    error->showMessage(tr("This USB device is already whitelisted."));
+    QMessageBox error_box(this);
+    error_box.setIcon(QMessageBox::Warning);
+    error_box.setWindowModality(Qt::WindowModal);
+    error_box.setWindowTitle(tr("USB Whitelist Error"));
+    error_box.setText(tr("This USB device is already whitelisted."));
+    error_box.exec();
     return;
   }
   SConfig::GetInstance().m_usb_passthrough_devices.emplace(vid, pid);