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BlackBelt – Troubleshooting the Windows OS

This four-day course trains you how to become a better troubleshooter of any environment that runs on Windows. It is applicable to every OS from NT 4 to Windows 10 – both servers and clients. Let an excellent presenter and troubleshooter teach you the tricks that he has up his sleeves.

The best way to become a great troubleshooter is to learn from the ground up. This course teaches you how the OS really works and how to troubleshoot it effectively.

Sami’s BlackBelt Troubleshooting session has been selected as the Best Session in TechEd North America 2014, TechEd Europe 2014 and TechEd Australia 2013 so you can be sure to learn a lot in the most entertaining and effective way!

Target audience:
This training is meant for all administrators who want to deepen their knowledge and troubleshooting skills in Windows. It is also suitable for people who think they know everything about the Windows OS… It’s a deep dive course and surely in no way suitable for only the beginners but for seasoned administrators as well (I guarantee you won’t be disappointed!). If someone want’s to become a true BlackBelt troubleshooter you should first take this course which is more Tools-oriented and then continue to take the BlackBelt – Advanced Troubleshooting the Windows OS – course which is more Content-oriented.


  • Basic experience with Windows Administration
  • Basic understanding of Active Directory
  • Basic understanding of networking infrastructure


  • Troubleshooting methodology
    • What are we against?
    • How to isolate the error
    • How to document the error
  • Tools and procedures for troubleshooting Windows
    • Most important tools for troubleshooting
    • Appropriate permissions
  • OS Internals
    • Windows modes
    • Processes and threads
    • Services and programs
  • Registry Internals
    • Registry structure
    • How to manage the registry
  • Troubleshooting of the SLOW
    • Slow startup/logon
    • Slow operations
    • Memory/Disk/CPU bottlenecks
  • Troubleshooting security related issues
    • Security internals of Windows
    • How to troubleshoot issues related to permissions
    • How to troubleshoot issues related to domains
  • Troubleshooting network issues
    • Best practises to troubleshooting network issues
    • Monitoring network activity
  • Troubleshooting device drivers
    • How Windows uses its Driver Store
    • How to troubleshoot device drivers
  • Unbootable machine troubleshooting
    • Safe modes and other advanced startup modes
    • Windows PE/RE internals
    • Tools for fixing an unbootable OS
  • Basics of debugging and debuggers
    • How to debug a machine
    • When to debug a machine with an actual debugger
  • BSOD internals
    • How BSOD works and how to make one
    • How to analyze memory dumps

The results of the training the participant:

  • Understands the troubleshooting methodology
  • Understands the tools and procedures for troubleshooting Windows
  • Understands the internal processes of the OS and how to troubleshoot them
  • Understands how to troubleshoot security and network related issues
  • Understands the basics of debugging and debuggers
  • Basic experience with Windows Administration
  • Basic understanding of Active Directory
  • Basic understanding of networking infrastructure

Sami Laiho is one of the world’s leading professionals in the Windows OS and Security. Sami has been working with and teaching OS troubleshooting, management, and security since 1996.
In 2019 Sami was chosen by TiVi-magazine as one of the top 100 influencers in IT in Finland. He is the 11th most followed person in his field in Finland.
At Ignite 2018, Sami’s “Behind the Scenes: How to build a conference winning session” and “Sami Laiho: 45 Life Hacks of Windows OS in 45 minutes” sessions were ranked as #1 and #2 out of 1708 sessions!! This was the first time in the history of the conference that anyone has been able to do this.
Before that, at Ignite 2017, the world’s biggest Microsoft event, Sami was evaluated as the Best External Speaker! Also, Sami’s sessions were evaluated as the Best session in TechEd North America, Europe and Australia in 2014, and Nordic Infrastructure Conference in 2016, 2017 and 2019.

The training price also includes:

  • teaching materials;
  • a trainer’s consultation on the topics learned by e-mail after the training;
  • certificate.

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BlackBelt – Troubleshooting the Windows OS