Cisco TAC states that by default Windows sets the DSCP to 0 unless an application is configured to mark its own traffic.
Checked 2026-10-02
By default, Windows OS sets DSCP tag to '0' unless you have applications configured to mark traffic such as Webex for example.
- Vendor
- Microsoft
- Product
- Windows
- Subsystem
- Policy-based QoS
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Enable DSCP QoS Tagging on Windows Machines — Cisco · tier 2 current vendor documentation · Introduction / Background
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting voice QoS markings that are stripped or ignored: source note voice-qos-troubleshooting-win-default-dscp-zero. WarmTransfer. https://warmtransfer.net/knowledge/claims/voice-qos-troubleshooting-win-default-dscp-zero
BibTeX
@misc{warmtransfer-claim-voice-qos-troubleshooting-win-default-dscp-zero,
title = {Troubleshooting voice QoS markings that are stripped or ignored: source note voice-qos-troubleshooting-win-default-dscp-zero},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/voice-qos-troubleshooting-win-default-dscp-zero},
note = {Source note voice-qos-troubleshooting-win-default-dscp-zero, checked 2026-10-02}
}