Introduction Recently I was engaged on this TechNet Forum thread and I thought that it was an interesting question and concern. Let me explain the scenario on which I was able to repro the behavior on my own lab: Contoso has a security policy where only users that belong to the Internet Users...

Just a quick update on the part 2 of this series of 3 articles about Netmon RWS Parser. Check it out at http://technet.microsoft.com/en-us/library/ff536096.aspx

Introduction Recently working a case where customer was trying to implement the approach explained by my friend Tom Shinder on his post “ Clever Way to Redirect OWA Users Who Can’t Remember to Include /Exchange in the Path ” and it was not working. The approach explained by Tom is valid and works...

I already talked about Network Monitor Wizard (AKA NetWiz ) here some months ago and this is an ongoing project that I have with some friends at Microsoft. Since our original code (written in C#) had some third party components we couldn’t really publish at CodePlex, therefore we completely re-wrote...

Why is it a bad request? If you haven’t seen this before, I see quiet often in some scenarios involving ISA Server and guess what: if I remove ISA Server from the picture it works just fine . Well, we all know that when you are wide open to Internet there is nobody inspecting your traffic anyway so you...

1. Introduction Error 64 can happen due many situations and I documented one of those situations last year and as you could see sometimes it is not easy to find out why this error happens. The issue that I’m about to describe here was identified while I was troubleshooting a third party application...

Couple of days ago I was assisting a friend to troubleshoot the infamous 5783 that was causing the authentication prompt issue that we all know about. In this case the problem was happening throughout the night, which was even odder because during the day when the traffic was really high the issue wasn...

Michael Hawker (Network Monitor PM) just release a video about the first Network Monitor Experts Day. Watch it at: http://channel9.msdn.com/posts/MichaelHawker/Network-Monitor-Experts-Day-Part-1-The-Experts-Story/ Also, talking about Netmon, check it out the news about the new capability that...

Great news folks! Netmon Team just released Netmon 3.3 for public download. This release brings new enhancements from previous version, such as: · Ability to capture on WWAN and Tunnel interfaces on Win7 · Right-click add to alias. · Right click go to definition · Auto-scroll · API Extension...

This post is about a case where Windows Mobile devices were having problems when enabling Active Sync Direct Push feature. On the device we were receiving the error 0x80072eff . This error means: err 0x80072eff # anonymous HRESULT: Severity: FAILURE (1), Facility 0x7, Code 0x2eff # for...

Last week I said that 3 out of 5 cases where user says it is an ISA issue it ends up not being. Today I worked in another case that goes to that statistic. What makes me sad about this is the mindset that many Windows Admins, Network Administrators and users in general have when deal with an issue where...

Last Tuesday night I was helping out a friend from my team that was handling a case where customer was unable to access Outlook Anywhere from outside network. As usual, everything works inside, so who’s to blame? Of course ISA Server, it is the only thing different, right? Will see… To better isolate...

The reason why I’m saying “demystifying” is because many people are still having wrong concepts and therefore making wrong assumptions about how networks are configured on ISA Server/TMG. Although this is well documented at TechNet (since it is a core concept), sometimes due the massive amount of information...

This post could easily be called “Slow Internet through ISA Server”, but I decided to change the title and the focus. I’m doing that for a simple reason: people still thinking that only Windows system needs to be patched. What an untrue statement this is and how I’m convinced more and more that if you...

1. Understanding the Problem I already worked in many cases where customer wants to know why ISA is alerting that it might be under attack by logging events such as: Figure 1 – Number of TCP Connections. …and also this one: Figure 2 – Denied Connections per Minute. ...

The first time that I blogged about this was in October 2006 at ISA Server Team Blog , we were getting so hammered about that issue that it motivates us to create an official article about that. Last year we published an article at Microsoft TechNet Library explaining how to improve Web Browsing performance...