Networking Quality of Service (QoS) refers to a variety of techniques that control the flow of network traffic, helping to improve transmission speeds. QoS Packet Scheduler is installed by default for local area network (LAN) connections, but if the default settings have been changed or QoS Packet Scheduler has been uninstalled, you can install it manually. Here's how to do it:
Open Network Connections by clicking the Start button , clicking Control Panel, clicking Network and Internet, clicking Network and Sharing Center, and then clicking Manage network connections.
Right-click the connection that you want to install QoS Packet Scheduler on, and then click Properties.
If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
Click Install, click Service, and then click Add.
Click QoS Packet Scheduler, and then click OK.
You don't need to restart the computer after installing QoS Packet Scheduler.