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Networking Blog

The Official Blog Site of the Windows Core Networking Team at Microsoft

  • 70 Blog Articles
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3,647

What's QUIC?

JamesKehr on Aug 25 2021 06:58 AM
This is a quick discussion, all puns intended, about why QUIC is important to the modern internet.
3,425

Enabling HTTP/3 support on Windows Server 2022

tojens on Aug 24 2021 06:00 AM
Instructions for enabling HTTP/3 for your Windows Server-based web services
4,525

Windows Insiders gain new DNS over HTTPS controls

tojens on Jun 29 2021 06:00 AM
A recap of the new ways Insiders can configure the use of DNS over HTTPS on Windows
2,816

Network ATC in Preview on Azure Stack HCI

Dan Cuomo on May 27 2021 11:50 AM
Azure Stack HCI is a subscription service that, like Office 365 or Windows 10, continually get free updates. The next up...
6,086

Algorithmic improvements boost TCP performance on the Internet

huanyi on May 11 2021 07:56 PM
We will walk through our journey and show how we made big strides in improving performance between Windows Server 2016 a...
18.4K

Making MsQuic Blazing Fast

nibanks on Apr 14 2021 11:13 AM
In the last year, MsQuic upload speeds have more than quadrupled! Come read about all we've done for MsQuic performance.
4,701

Troubleshooting Switch Misconfiguration

Dan Cuomo on Mar 19 2021 01:46 PM
It can be difficult to determine if you host can't communicate because of a host or physical network configuration. The ...
1,976

Azure Kubernetes Service on Azure Stack HCI Parity with AKS PowerShell

jessicaguan on Mar 03 2021 09:00 AM
Azure Kubernetes Service on Azure Stack HCI's most recent release with PowerShell updates to align more with Azure Kuber...
2,657

Quick Tip: Does my NIC support VMMQ?

Dan Cuomo on Feb 22 2021 11:49 AM
This article gives a brief overview of VMMQ and provides a pointer on how to quickly identify if your adapters support t...
49.2K

Calico for Windows goes Open Source

mkostersitz on Sep 22 2020 07:08 AM
Over the last couple of years Microsoft and Tigera have been working together to close some significant gaps in the Wind...
63.8K

Windows Server Insiders getting gRPC support in Http.sys

tojens on Jul 22 2020 06:00 AM
Announcing new Http.sys features to support gRPC 
14K

Pointer: Domain Time Synchronization in the Age of Working from Home

Dan Cuomo on Jun 05 2020 09:04 AM
Working from home has presented challenges in many areas and it is true for time synchronization on computers used at ho...
100K

Introducing Packet Monitor

george-guirguis on May 22 2020 06:00 AM
Packet Monitor is an in-box cross-component network diagnostics tool for Windows.
142K

Windows Insiders can now test DNS over HTTPS

tojens on May 13 2020 10:00 AM
This post will explain how to use DoH as a Windows Insider
48K

MsQuic is Open Source

Daniel Havey on Apr 28 2020 03:49 PM
Microsoft is open sourcing our QUIC library, MsQuic, on GitHub under an MIT license. MsQuic is a cross-platform, general...
25.3K

Introducing SDNSecurityToolkit

tojens on Apr 01 2020 06:00 AM
A new tool for analyzing vulnerabilities in SDN deployments
54.1K

L2bridge Container Networking

David Schott on Mar 05 2020 06:00 AM
L2bridge networking is widely used in software-defined data centers thanks to its high configurability, performance, rel...
60.7K

Teaming in Azure Stack HCI

Dan Cuomo on Feb 03 2020 06:00 AM
Windows Server currently has two inbox teaming mechanisms with two very different purposes. In this article, we’ll descr...
140K

Windows will improve user privacy with DNS over HTTPS

tojens on Nov 17 2019 09:00 PM
Announcing and explaining our intention to support DNS over HTTPS in future versions of Windows
38.5K

Windows Containers and Rancher 2.3

mkostersitz on Oct 08 2019 09:05 AM
Container technology is transforming the face of business and application development. 70% of on-premises workloads toda...
31.9K

Disabling Legacy TLS

Gabriel Montenegro on Oct 02 2019 06:00 AM
Please read our blog on new capabilities in Windows Server 2019 to enforce improved security on connections.
31.5K

Evolution of Timekeeping in Windows

tojens on Aug 05 2019 06:00 AM
A document providing an overview of the time keeping improvements in Windows.
45.4K

Direct Server Return (DSR) in a nutshell

mkostersitz on Jun 19 2019 06:00 AM
TL;DR; A question we get asked quite a bit is: "What is Microsoft doing to improve Networking performance?" To answer th...
35K

Synthetic Accelerations in a Nutshell – Windows Server 2019

Dan Cuomo on May 29 2019 06:00 AM
This is the final post covering synthetic accelerations covering Windows Server 2012, 2012 R2, 2016, and 2019. We recomm...
20.3K

DPDK releases v19.05, introduces Windows Support!

Harini Ramakrishnan on May 22 2019 11:02 AM
Windows support for DPDK merges into the community maintained repository with v19.05 release!
27K

Troubleshooting Kubernetes Networking on Windows: Part 1

David Schott on May 15 2019 06:00 AM
Kubernetes is not easy to troubleshoot – even if you’re an expert. There are multiple components involved in the creatio...
22.8K

Synthetic Accelerations in a Nutshell – Windows Server 2016

Dan Cuomo on May 08 2019 06:00 AM
This is the third in a series of posts covering synthetic accelerations covering Windows Server 2012, 2012 R2, 2016, and...
10.8K

Synthetic Accelerations in a Nutshell - Windows Server 2012 R2

Dan Cuomo on Apr 24 2019 06:00 AM
This is the second in a series of posts covering synthetic accelerations (specifically VMQ) on 2012, 2012 R2, 2016, and ...
16.3K

Synthetic Accelerations in a Nutshell – Windows Server 2012

Dan Cuomo on Apr 17 2019 06:00 AM
This is the first in a series of posts covering synthetic accelerations (specifically VMQ) on 2012, 2012 R2, 2016, and 2...

Latest Comments

takekazuomi
in Enabling HTTP/3 support on Windows Server 2022 on Sep 20 2021 05:06 PM
Wonderful. I'm looking forward to 2022 coming to Azure App Service.
0 Likes
arslanchariyev
in Enabling HTTP/3 support on Windows Server 2022 on Sep 20 2021 01:51 AM
I have found why TL1.3 was not working on my side.On my servers (which were upgraded from a previous version to Win 2022) I had used Nartac.com's IISCrypto tool ( a great tool by the way) to configure TLS/cipher/schannel settings. Then I had set the template settings on the IIScrypto tool back to "S...
0 Likes
1username
in L2bridge Container Networking on Sep 15 2021 12:39 PM
The solution as shown with the host as gateway does not seem to work at all. No packets are routed out of the container network. If I change the dummy ARP entry in the container to use the MAC address of the host endpoint instead of the "00-01-e8-eb-2e-4b" in the example, I see bidirectional forward...
0 Likes
JanReilink
in Enabling HTTP/3 support on Windows Server 2022 on Sep 14 2021 03:52 AM
I can confirm Firefox uses QUIC / HTTP/3, and in my environment Chrome unfortunately doesn't. Maybe has something to do with the supported QUIC/HTTP3 draft version supported by both Chrome and MsQuic? But strange that everyone has different results with in-place upgrades, browsers, etc. The followin...
1 Likes
el3c
in Enabling HTTP/3 support on Windows Server 2022 on Sep 14 2021 03:38 AM
Same here, only FF is working with QUIC and some stange warnings while sniffing the traffic with wireshark:
0 Likes