Microsoft KB Archive Search

Notice: This website is an unofficial Microsoft Knowledge Base (hereinafter KB) archive and is intended to provide a reliable access to deleted content from Microsoft KB. All KB articles are owned by Microsoft Corporation. Read full disclaimer for more details.

  1. Home
  2. Policy based QoS not working in Windows 7 clients

Policy based QoS not working in Windows 7 clients

Symptoms

You have a Windows 7 client machine / Windows Server 2008 R2 server on which you are pushing Policy Based QoS and setting a DSCP value for particular / all traffic.

You notice in a subsequent network trace that the DSCP value is 0x00.

↑ Back to the top

Cause

This issue occurs because the DSCP value gets assigned only to the traffic on the adapter which is able to access the Domain.
For example you have two adapters with one in production and the other for a private network (maybe used for backup).
You would notice that the DSCP value gets tagged only on the traffic from the production adapter and not the backup adapter.

↑ Back to the top

Resolution

If you need to DSCP values to take effect on the adapter which does not have Domain access, you need to add the following registry on the system:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\QoS

Type: REG_SZ
Name: Do not use NLA
Value: 1

Create key "QoS" if it does not exist.

After you create the above registry key, you need to reboot the computer.  

↑ Back to the top

Keywords: vkball, kb

↑ Back to the top

Article Info
Article ID : 2733528
Revision : 1
Created on : 1/8/2017
Published on : 7/11/2012
Exists online : False
Views : 96