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Categories

  • Windows Internals
  • Performance/Sizing
  • Security
  • Scripting
  • Splunk
  • Tips and Tools
  • Windows General

Modern Multi-Process Browser Architecture

An architecture overview of current browsers on Windows: Chrome, Firefox and Internet Explorer.

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by Helge Klein on January 22, 2019
  • Applications

Bluetooth Audio Quality & aptX on Windows 10

Bluetooth is a flexible standard. It defines various profiles that operate on top of the Bluetooth networking protocol stack and implement specific services, such as hands-free communications. Bluetooth devices each […]

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by Helge Klein on January 15, 2019
  • Windows General

Saving & Restoring Total Commander Tab Sets

Total Commander’s custom start menu is a great place to quickly launch all kinds of tools and programs that are otherwise hard to get to. However, TC’s start menu is […]

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by Helge Klein on January 7, 2019
  • Tips and Tools

Upgrading Ubuntu 16.04 to 18.04 & PHP 7.0 to 7.2 for WordPress

This post describes how I upgraded our webserver running WordPress on Apache from Ubuntu 16.04.5 LTS to 18.04.1 LTS. Please see this article for more information on the server’s installation […]

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by Helge Klein on December 12, 2018
  • Website

PowerShell Script: Test Chrome, Firefox & IE Browser Performance

There is more than one way to test the performance of web browsers like Chrome, Firefox, or IE, but regardless of how you do it, you need a consistent workload […]

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by Helge Klein on December 4, 2018
  • Scripting

Enabling HTTP/2 in Apache on Ubuntu 18.04

A number of requirements must be met before HTTP/2 can be enabled for a website. This is a compilation of steps I went through to get HTTP/2 working on our […]

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by Helge Klein on November 26, 2018
  • Website

How to Limit CPU & RAM via the Windows Boot Configuration

Testing the effects of different CPU and memory configurations is easiest when you run the tests on a powerful machine and restrict it to the required number of CPU cores […]

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by Helge Klein on November 21, 2018
  • Windows Internals

Laudation to E2EVC – Experts to Experts Virtualization Conference

On the eve of my departure for E2EVC Athens I feel it is time for a laudation. Let me explain why.

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by Helge Klein on October 31, 2018
  • Conferences

Splunking the Aspect Ratio Distribution of National Flags

When I tried to align the Union Jack and the flag of Germany on a presentation slide I noticed that I couldn’t – their aspect ratios are different. A quick […]

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by Helge Klein on October 30, 2018
  • Splunk

Creating an Application Crash Dump

How to enable local application crash dump creation globally or for a specific process executable only.

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by Helge Klein on October 24, 2018
  • Troubleshooting
  • Windows General

Standard Notes: a Note-Taking App with Client-Side Encryption

Note-taking is one of those topics that appear to have been solved long ago, yet offer plenty of opportunity for new contestants. There are multiple reasons for that, but for […]

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by Helge Klein on October 11, 2018
  • Applications

DiskLED is Now Open Source

DiskLED is a tool I wrote a while ago that displays performance counter data using an animated system tray icon. It comes with a graphical configuration dialog that lets you […]

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by Helge Klein on June 17, 2018
  • Helge's Tools

Inexpensive GPU Virtualization Options for Testing

For a new chapter in my ongoing series of talks and articles about browser performance I wanted to examine how key user experience metrics like page load time are dependent […]

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by Helge Klein on May 25, 2018
  • Virtualization

Is Blockchain the Right Technology for My Application?

This is an attempt at guidelines to help in technology decisions about when and where to use blockchain technology.

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by Helge Klein on March 19, 2018
  • Miscellaneous

Building a Fast and Silent Workstation PC

This article describes how to build a fast workstation PC that is almost completely silent (actually the fastest possible in terms of single-thread performance). It is based on a PC […]

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by Helge Klein on January 16, 2018
  • Hardware

Hyper-V Backup – Products & Options

It’s 2018, and backing up Hyper-V hosts is solved, right? I certainly expected it to be when I took on the task of finding a simple and reliable way to […]

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by Helge Klein on January 10, 2018
  • Virtualization

Browser Ad Blockers and Privacy

You have probably been in this situation: on some shopping site you put an article in your cart, but decide not to buy it after all. Later on, you notice […]

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by Helge Klein on December 18, 2017
  • Security

Browser Video: Codecs, Formats & Hardware Acceleration

Web video is ubiquitous. We take it for granted that browsers play video in high resolution, over any connection, on any device. Behind the scenes, a complex machinery of video […]

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by Helge Klein on December 4, 2017
  • Performance/Sizing

Troubleshooting Splunk Error “Search Process Did Not Exit Cleanly”

When Splunk displays an orange warning triangle instead of a chart or table it is time to investigate. Start by clicking the triangle to bring up a dialog with the […]

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by Helge Klein on July 20, 2017
  • Splunk

Recurring Checklists from Templates the Podio Way

Podio is a superb tool for team collaboration, structured information handling and even business process management. However, it is not perfect. There are some astonishing gaps in functionality. One of […]

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by Helge Klein on June 30, 2017
  • Tips and Tools

Leaked Token Handles Preventing RDS Session ID Reuse

A recent article on Microsoft’s Ask the Directory Services Team blog piqued my interest. It talks about how leaked access tokens prevent logon sessions to be freed when the user […]

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by Helge Klein on April 6, 2017
  • Citrix/Terminal Services/Remote Desktop Services

Streamed Video Audio Sync Problems on Windows 10 / Realtek Sound

I have been watching streaming video for a very long time. It always worked beautifully, in high resolutions and from any site: YouTube, Netflix, Amazon Prime Video, you name it. […]

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by Helge Klein on March 28, 2017
  • Troubleshooting

Upgrading Ubuntu 14.04 to 16.04 & PHP 5.6 to 7 for WordPress

This post describes how I upgraded our webserver running WordPress on Apache from Ubuntu 14.04.5 LTS to 16.04.1 LTS. Please see this article for more information on the server’s installation […]

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by Helge Klein on February 22, 2017
  • Website

Windows 10: Black Lock Screen with Citrix Receiver

Update: KB4022723 seems to fix the black lock screen issue described in this article. The Spotlight feature of Windows 10 shows beautiful images on the lock screen. Annoyingly, it appears […]

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by Helge Klein on February 13, 2017
  • Windows Internals

Universal Windows App Data Storage for Admins

Universal Windows Platform (UWP) is the current name for a new type of application platform originally introduced with Windows 8 as “Metro” and later renamed to “Modern”. UWP apps can […]

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by Helge Klein on January 31, 2017
  • Windows Internals

Disabling Azure Active Directory Password Expiration

User accounts created in Azure AD are subject to Azure AD’s password policies and restrictions, whose defaults are far from optimal. Unfortunately, the most severe shortcomings cannot currently be changed.

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by Helge Klein on January 25, 2017
  • Security

Delprof2 & SetACL Studio Free for Commercial Use

I am happy to announce that my tools Delprof2 and SetACL Studio are now free to use, both for individuals and corporations. Previously, Delprof2 was only free to use commercially […]

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by Helge Klein on January 11, 2017
  • Helge's Tools
  • SetACL Studio

The Perfect Workstation: Fujitsu Celsius J550

When it comes to selecting a general-purpose workstation I tend to be looking for the impossible: high performance, superb reliability, quiet operation, moderate price. Amazingly, there exists at least one […]

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by Helge Klein on November 23, 2016
  • Hardware

Faster Trimming & Compacting of Hyper-V Ubuntu VMs

A while ago I described how to compact an Ubuntu VHDX running on Hyper-V using the sfill command. Running sfill, however, can take hours. Luckily, there is a much faster […]

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by Helge Klein on November 10, 2016
  • Virtualization

Keyboard Shortcuts You’ll Never Want to Miss Again

Keyboard shortcuts are the key to productivity and efficiency. This is true for any machine, any OS and any application. This article lists shortcuts I personally find very helpful and […]

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by Helge Klein on November 2, 2016
  • Miscellaneous
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