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Quick Tip: Filter on IP in Network Monitor 3.4
[Update 2014-04-17] Thanks to Steve’s comment I learned that the HEX notation is absolutely not a must. You can just use the IP address but unlike simple filters like Destination or Source you must not...
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Direct Access: No Security Associations
I’ve been working on a Direct Access deployment for quite some time now. The clients are Windows 7 SP1 and the DA servers are based on Windows Server 2012. We hand out DA capabilities using a GPO that...
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Static Host Records Disappearing From DNS
Somewhere in the past year I started writing the stuff below. I had a specific DNS issue I was looking into. Sadly I never found the real solution, but I found the troubleshooting information...
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SCOM 2012 R2: Web Portal: 503 The Service is Unavailable
The other day one of my customers mentioned that their SCOM Web Portal has been broken for a while now. As I like digging into web application issues I took a quick look. Here’s what I came up with. It...
View ArticleFailover Cluster: Generic Applications Fail with OutOfMemoryException
Recently I helped a customer which was having troubles migrating from a Windows 2003 cluster to a Windows 2012 cluster. The resources they were running on the cluster consisted of many in house...
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Quick Tip: Enumerate a User his AD Group Memberships
Using the two following commands you can easily retrieve all the groups a user is member of. This command will also take account group membership caused by nested groups. Here’s the first line, it’s a...
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Active Directory: Lsass.exe High CPU Usage
Recently I had an intriguing issue at one of my customers I frequently visit. They saw their domain controllers having a CPU usage way above what we normally saw. Typically their domain controllers...
View ArticleS.DS.AM GetAuthorizationGroups() Fails on Windows 2008 R2/WIN7
Today I got a call from a colleague asking me to assist with an issue. His customer had a Windows 2008 R2 server with a custom .NET application on it. The application seemed to stop working from time...
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Error Loading Direct Access Configuration
This morning I wanted to have a quick look at our Direct Access infrastructure and when opening the console I got greeted with various errors all explaining that there was a configuration load error:In...
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Configure Windows Logon With An Electronic Identity Card (EID)
Here in Belgium people have been receiving an Electronic Identity Card (EID) for years now. Every once in a while I have a customer who asks me whether this card can be used to logon to workstations....
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Windows Technical Preview: Cannot Update the System Reserved Partition
Last week a new build for Windows Technical Preview (“Windows 10”) was available. You can easily find out by going to PC settings: Windows + C > Settings > Change PC Settings > Update and...
View Article3PAR: Connect to WebAPI using PowerShell
I’m currently involved in a CloudCruiser implementation. CloudCruiser is not one of my usual technologies, but as it’s something new to me it’s refreshing to do. CloudCruiser allows you to collect...
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MaxTokenSize Implications for HTTP.SYS
One of my customers had problems with certain users being member of a lot of Active Directory groups. This resulted in several client side issues. There’s an easy and well-known “fix” for that: raise...
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Azure Virtual Machines: Event 257: Defrag: Slab Consolidation/ Slab Analysis
I’ve got a customer running some virtual machines on the Azure IAAS platform, and when doing a quick checkup I found the following recurring events in the event log:The volume (C:) was not optimized...
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Commvault REST API using PowerShell
A while ago I wrote a blog post about Connecting to the 3PAR WebAPI using PowerShell. Today I’m doing the same but now with the Commvault REST API. Connecting to that API is even easier! Commvault has...
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Corrupt Local GPO Files
A while ago I go I looked into a laptop not being able to access anything on the network. As this customer has Direct Access deployed I knew I had to start my troubleshooting with the following...
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Protecting a Domain Controller in Azure with Microsoft Antimalware
I’m getting more and more involved with customers using Azure to host some VM’s in an IAAS scenario. In some cases they like to have a Domain Controller from their corporate domain on Azure. I think...
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Synchronizing Time on Azure Virtual Machines
I’m currently setting up a a small Identity infrastructure on some Azure Virtual Machines for a customer. The components we’re installing consist of some domain controllers, a FIM server, a FIM GAL...
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Federating ADFS with the Belnet Federation
The Belnet federation is a federation where a lot of Belgian educational or educational related institutions are joined to. I’m currently involved in a POC at one of these institutions. Here’s the...
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Working with PowerShell DSC and Azure VM’s based on Windows 2012
Mostly when I work with Azure VM’s I do the actual VM creation using Azure PowerShell cmdlets. I like how you can have some template scripts that create VM’s from beginning to end. Typically I create a...
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