Cannnot find blutetooth device

[Chaki]

Hello, I am trying to find a hc05-bluetooth 2.0 module with the following code, which I have from the QtDocu (https://doc.qt.io/qt-5/qtbluetooth-overview.html#scanning-for-bluetooth-devices). My problem is that my program does not find/scan my bluetooth device

MainWindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    agent  = new QBluetoothDeviceDiscoveryAgent(this);
    ui->setupUi(this);
    connect(agent,SIGNAL(deviceDiscovered(QBluetoothDeviceInfo)),this, SLOT(deviceDiscovered(QBluetoothDeviceInfo)));
    agent->start(QBluetoothDeviceDiscoveryAgent::ClassicMethod);

    socket = new QBluetoothSocket(QBluetoothServiceInfo::RfcommProtocol);
}

MainWindow::~MainWindow()
{
    delete ui;
}


void MainWindow::on_btn_find_clicked()
{
    ui->listwdg_devices->clear();
    agent->stop();
    agent->start();
}

void MainWindow::deviceDiscovered(const QBluetoothDeviceInfo &device)
{
    qDebug() << "Found new device:" << device.name() << '(' << device.address().toString() << ')';
    ui->listwdg_devices->addItem(device.address().toString());
}


void MainWindow::on_listwdg_devices_itemClicked(QListWidgetItem *item)
{
    string = item->text();
    static const QString serviceUuid(QStringLiteral("00001101-0000-1000-8000-00805F9B34FB"));
    socket->connectToService(QBluetoothAddress(string), QBluetoothUuid(serviceUuid), QIODevice::ReadWrite);
}

MainWindow.h

private slots:
    void on_btn_find_clicked();
    void deviceDiscovered(const QBluetoothDeviceInfo &device);
    void on_listwdg_devices_itemClicked(QListWidgetItem *item);

private:
    Ui::MainWindow *ui;
    QBluetoothDeviceDiscoveryAgent *agent;/
    QBluetoothSocket *socket;
    QString string;

[jsulm]

@Chaki Which OS and which Qt version?
Is Bluetooth enabled on the host?
Are any other devices found?

[Chaki]

@jsulm I have Windows 10 and qt version 5.15.0
I have enabled bluetooth via the Windows settings and I am not able to find any other devices

[Chaki]

Edit: I solved the problem with changing:
agent->start(QBluetoothDeviceDiscoveryAgent::ClassicMethod);
to
agent->start();