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We get questions from customers asking how they can disable a wireless connection when they are connected to a physical network. There can be various reasons for wanting to do this but they are often misguided. First let me say – Windows does not currently have the ability to disable a Wireless connection...

There can be several causes that will prevent the Windows Firewall from starting and I will attempt to cover them in this series of five blog posts. In this first post, I will cover Windows XP and Windows Vista / Windows 7 separately as they are two different services. Last I will cover one issue with...

Hello all, my name is Mehul and I am with Platforms Networking support. We receive many calls dealing with slow file transfer when copying files using TCP (such as SMB file copying or FTP file transfer). The recommended approach to troubleshoot these scenarios is to take Network Monitor traces at the...

I recently read a post by Joseph Davies over at the WSiX Network Connection blog about a resource on TechNet I hadn’t seen before that many of our readers may be interested in. The Windows Server Information eXperience guys have been hard at work updating the Networking and Access Technologies page on...

I have just one newly released networking-related article to share with you this week. Check back again next week to see what new content we have then! 2478747 How to install and uninstall IPv6 in Windows XP - Mike Platts

Hi all – this week I have 5 new networking-related articles to share with you: 2366024 Primary DNS suffix for a Windows server 2008, Windows server 2008 R2, Windows 7, Windows Vista, deployment using an Answer file may not be set. 2282988 DNS Model for MBCA 2.0 for Windows Server 2008 - download location...

I am writing this blog post because we get a lot of questions regarding how NLA determines a network profile and how it relates to Firewall Profiles as the two are often confused. What is NLA? First let’s start with what NLA does. For each network interface the PC is connected to, NLA aggregates the...

Can a port be re-used before TIME-WAIT expires? In a TCP conversation, the communicating peers use port numbers to communicate with each other. The way they uniquely identify the sessions is with a four tuple (Source IP address, Source Port, Destination IP address, Destination Port). The four tuple represents...

I’d like to apologize for not having any new KB articles to post for the past several weeks; some changes have been going on with the tools I use to find this information. Here are the most recent networking-related KB articles since my last entry on May 13th. I apologize in advance for any duplicates...

We have had a couple of lean weeks recently with very few new KB articles to report, but that is certainly not the case this time around! Here are the latest networking-related KB articles: 979554 The creator of an SNMP trap notification cannot be identified in Windows Server 2003 978972 Stop error message...

We want to get the word out about an upcoming deadline. On July 13, 2010 our support for Windows 2000 and Windows XP Service Pack 2 will end. In the case of Windows XP, Service Pack 3 will continue to be supported. More information about the end of Windows XP SP2 support can be found here: http://support...

Here are the latest networking-related Knowledge Base articles for the week of December 27, 2009 – January 2, 2010. Happy New Year! 974841 An update is available for Windows XP to support protocol negotiation for remote procedure call (RPC) over HTTP Authentication 977526 Communication is interrupted...

If you are using Wired 802.1x, upgrading your Windows XP clients to Service Pack 3 can cause some severe issues due to design changes in this area. The following information is intended to provide some background information on these changes and how to work around them. Although most these issues are...

This week, I have 4 new KB articles to share: 974080 DirectAccess Workaround for reaching IPv4 address checking sites 971383 Data loss occurs when the Winsock "recv" function returns 0 bytes if both the client-side and the server-side applications run on the same computer that is running Windows...

I’m trying to resurrect this series of sharing the latest KB articles related to Windows networking technologies. I hope you find this to be helpful! There are only 2 such KB articles this week: 969632 Background Intelligent Transfer Service (BITS) does not start in Windows XP, and you receive a message...

The following question comes up from time to time and for various reasons. What is the expected name resolution behavior of the DNS client resolver on Windows XP or Windows Vista? This may be for a single or for multiple network interfaces. So I thought I would put together a brief overview of what you...

What is an SNMP Trap? It’s nothing but an alert message with abstract information about an event sent from an SNMP agent to its configured SNMP manager. It notifies the administrators about an event that occurred in the SNMP agent. There is separate service called SNMP Trap service which runs in Microsoft...

This post is meant to discuss the issues that can occur with Destination IP address selection and its affect on the DNS Round Robin process. What is Round Robin and Netmask Ordering DNS Round Robin is a mechanism for choosing an IP address from the list returned by a DNS server so that all clients won...

In Windows, the DNS Client service is the client component that resolves and caches Domain Name System (DNS) domain names. When the DNS Client service receives a request to resolve a DNS name that it does not contain in its cache, it queries an assigned DNS server for an IP address for the name. All...

Lately, I have been seeing a number of issues/concerns from people where they manually stop the Firewall service and lose connectivity to the machine. They always seem surprised when I explain that it is by design. Stopping the firewall Service should only be a test Microsoft does not support stopping...

One of our customers reported an issue after applying the update per KB958687 (MS09-001), which installs a new version of SRV.SYS. The customer was experiencing the following symptoms: Request Timed Out error when trying ping the problem machine from another machine. Unable to establish a remote desktop...

If you are configuring Windows Security Heath Validator for Security Update Protection, you have multiple options.  One of these options are 'Important and above' as shown below: This being the case, you may think that any Important Update available on the client will force the client to be non...

956803   MS08-066: Vulnerability in the Microsoft Ancillary Function driver could allow elevation of privilege 957095   MS08-063: Vulnerability in SMB could allow remote code execution 955427   Copy process is very slow when you copy large files from one computer to another computer in...

953835   You cannot perform NetSH commands by using a user account that belongs to the "Network Configuration Operators" security group on a Windows Vista-based computer or on a Windows Server 2008-based computer 957931   A Windows Vista-based or Windows Server 2008-based computer...

Installation of Windows XP Service Pack 3 results in the Windows Firewall service being set to Automatic startup, regardless of its previous startup setting. After installing Service Pack 3 for Windows XP, you may be surprised to see that both the Windows Firewall/Internet Connection Sharing (ICS) service...