Category Archives: Windows

Windows 802.1X supplicant debugging

I got involved in a complicated issue with a Cisco ISE implementation, and to understand what the endpoint (windows) was doing had to debug the 802.1x on the ccommand line.

Look to all interfaces in the current OS stack and providers

netsh trace show interfacesnetsh trace show providers

netsh lan set tracing mode=[yes|no|persistent]

Capture all info to the tracefile trace.etl, make sure you have the right providers

netsh trace start capture=yes tracefile=C:\trace.etl provider=[microsoft-windows-wired-autoconfig|microsoft-windows-wlan-autoconfig|microsoft-windows-onex]


Time to stop the capture and and find the root cause :)

netsh trace stop

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Boost your Azure Cloud Skills

Microsoft launched Azure courses on Open Edx, EdX offers free online courses and classes. Find the latest MOOC from the world’s best universities including MIT, Harvard, Berkeley, UT and others here

Each course has several modules, where you have a review questions  at the end and a final grade exam.

Courses Available

  • Microsoft Azure Virtual Machines
  • Microsoft Azure Virtual Networks
  • Microsoft Azure Identity
  • Microsoft Azure Storage
  • Azure Fundamentals
  • Microsoft Azure for AWS Experts
  • Automating Azure Workloads
  • Managing Azure Workloads
  • Continuous Integration and Continuous Deployment

You can find these courses here


Show an hidden WiFI Key from a Profile on Windows 8.1

To get a list of your previous WiFi connections, type this command:

netsh wlan show profiles


To get key from a specific Profile, type this command:

netsh wlan show profile name=”Meraki WiFi” key=clear


This particular key is not secure, do not use it! I’ve change it just to do this post!


Manage wireless network profiles

Voucher Microsoft Virtualization Certification for FREE

A Microsoft lançou uma campanha de virtualização para realizar gratuitamente o exame 74-409 Server Virtualization with Windows Server Hyper-V and System Center. Ideal para quem é responsável por desenhar, implementar, gerir e manter uma infraestrutura virtual que assenta sobre a plataforma de virtualização Microsoft.

O numero de exames gratuitos é limitado, o exame deve ser realizado no máximo até 30 Junho 2014.

Deverá entrar no link Earn a Microsoft Virtualization Certification for FREE e carregar no botão “Get Free Vocuher” do lado direito e seguir as instruções.

Este exame deverá ser realizado através da

Após aprovação este será o email recebido da Microsoft com o Vocuher:

Thank you for registering for your 74-409 Server Virtualization with Windows Server and System Center exam voucher. The number of free exams is limited so schedule your exam soon.

Your voucher number is 0000000.

This voucher is valid for 74-409 Server Virtualization with Windows Server and System Center exam.

Vouchers expire and all exams must be taken by June 30, 2014

You will receive an email shortly with this Voucher number.

Please write your voucher code down and keep it in a safe place. You will need it when you schedule your exam. To register for your exam, go to ProMetric Registration and when prompted, use your voucher code to schedule your exam.


Earn a Microsoft Virtualization Certification for FREE