1. Click Start in the lower left corner of the desktop, click Control Panel in the pop-up window, and then select Network and Internet in the control panel.

2. Check the network status and tasks. Select in the lower left corner of the new window, and then Windows Firewall selects the left column of the form.

3. Select to turn Windows Firewall on or off. Finally, choose to open or close according to your own needs, and then confirm. If not, it should be that Tencent video is not installed correctly and needs to be uninstalled and reinstalled.