Interview with a Wiki Ninja, a Portuguese Leader, and an expert in Exchange Server and Windows Server: Jefferson Castilho

Hello Wiki community, today is the day of Monday interview with Wiki Ninja.

It is my pleasure to introduce Jefferson Castilho.


Twitter: @je_will


Some of Jefferson's key statistics:

  • 3,858 Recognition Points
  • Microsoft Partner
  • 106 Forum Answers
  • 42 Wiki Articles
  • 290 Wiki Edits
  • 62 Wiki Comments
  • 14 Wiki Ninja Blog Posts
  • 56 4 and 5 star ratings on those blog posts
  • 114 Blog Comments

Some of Jefferson's latest Wiki Articles:


Special thanks to Fernando for conducting the interview in Portuguese:

Segunda-Feira - Entrevista com o Wiki Ninja Jefferson Castilho


Who are you, where you are, and what you do?
My name is Jefferson William Castillo currently resides in São Paulo, I consult Windows with a focus on projects in a Microsoft partner company, and also help in the Microsoft Community with my specialties.


What are your specialyy technologies?
Currently working with these specialty projects:
  • Office365
  • Windows Intune
  • Windows Azure
  • Exchange Server
  • Hyper-V
  • Active Directory

And I have other areas in which I've worked on when I've had the opportunities:.

  • Windows Client
  • Microsoft Forefront Threat Management Gateway
  • Windows Server


How did you learn about TechNet Wiki and what your first collaboration?

I first found the TechNet Wiki for some articles, on occasion I have been searching to see what the Wiki was and how I could contribute. I found a lecture, which helped explain how it worked and the process of how to help.

My first contribution was an error in Exchange Server:


In addition to your work on the TechNet Wiki, in which other sites do you contribute?
I have my personal blog that is (, which is geared to problems I have during my day-by-day work. I've been blogging for over a year and have almost 35 million views. 
Another blog in which I am one of the Creators is done with my friend John Paul and the MVP Eduardo Sanchez. It is The project was born from an idea of having a blog that covers several various Microsoft technologies. And it can help you with your knowledge and sharing information with others.
I help also in Cooperati ( a miscellaneous information portal with some articles about Office 365.


What are your major projects now?

I'm focusing on some projects for Office 365. I'm working also in studies in Windows Intune and Windows Azure to write some new articles.


What do you do with TechNet Wiki, and how does it fit in your work?

I think I'll always want to learn more information about new technologies, and always when I have a question, I call upon TechNet Wiki. That in most cases always has solved my problems.


What interests you the most about TechNet Wiki?
In fact the Wiki helps me to always be up to date with all the technologies on the market with its diversity of content. It's actually showing me a range of very useful information!


Among the articles you contributed to the Technet Community Wiki, what are your Favorites?

Let me link to some articles...

Reducing size of the WINSXS Folder:
This article was featured in TechNet Guru April 2014, winning the silver medal.
Service health (Office 365)

Enabling "Recycle Bin" in Active Directory from Windows Server 2012 R2

Cannot Connect to the virtual machine. Try to connect again-Windows Server 2008 R2 Hyper

Exchange Server 2010-Require that all senders are authenticated


Who impressed him in the Community Wiki and why?
First, the Microsoft Brazil community is great; plus I have some names of people who have helped me in this early community; some MVP´s: Rafael Bernardes, Erick Albuquerque, and Vinicius Mozart. These guys helped me with questions about how to contribute to the community.
They helped me become who I am today: to have love for what I do in blogs, on TechNet Wiki, and it is helping me in my day-to-day work to be a better person in my profession!
Thanks to all who contribute in WikiBR!



You can find this interview in Portuguese here:

Segunda-Feira - Entrevista com o Wiki Ninja Jefferson Castilho


Jefferson, thank you for contributions and for the interview! Please join me in thanking Jefferson!


Follow the Twitter of WikiNinjas Brazil and the official page of TechNet Wiki on the links below:

Enjoy the Wiki!

  - Ninja Ed

Comments (19)

  1. Recep YUKSEL says:

    You’re welcome, Jefferson. Congrats. Thank you Ed.

  2. Saeid Hasani says:

    Congratulations Jefferson!
    Thanks Ed for providing the great interview! 🙂

  3. Thanks Durval! I need to clean this up some.

  4. Okay. I finished cleaning up the grammar and formatting.

  5. Ed
    Thank you for being mentioned for the interview and the translation much hope to help Microsoft community

    Durval, Alan, Zeca,
    Good owe a little of this recognition to you guys. for the work they have played during 2014 and early 2015. Let up community Technet Wiki Brazil.


    Thank you very much.

  6. pituach says:

    Congratulations Jefferson! nice to know you 🙂
    Thanks Ed, for bringing us the interview

  7. You’re welcome, Pituach!

    I want to make sure we keep interviewing the best community contributors!

  8. Wow. Congratulations Jefferson. Great job in community Brazil. 🙂

  9. You’re welcome! I’m glad to show off some of Jefferson’s great contributions!

  10. Congrats Jefferson and Welcome 🙂

  11. Durval Ramos says:

    Ed, great interview !!!

    Jefferson, Thanks for sharing… so much knowledge about Office 365. I hope you continue sharing with our TechNet Wiki Community, especially in Brazil, for a long time.

  12. You’re welcome, Jefferson! Thank you for your contributions in the community!

  13. Anonymous says:

    Welcome back for another analysis of contributions to TechNet Wiki over the last week.

    First up, the

  14. Anonymous says:

    Olá Comunidade TechNet Wiki !
    Hoje é Quinta-Feira, dia de Quinta-Feira – Conselho Spotlight

  15. anonymouscommenter says:

    Welcome back for another analysis of contributions to TechNet Wiki over the last week.

    First up, the

  16. anonymouscommenter says:

    Ola comunidade Wiki, hoje é o dia de Segunda feira entrevista com o Wiki Ninja.

    Meu nome é

  17. anonymouscommenter says:

    Welcome back for another analysis of contributions to TechNet Wiki over the last week.

    First up, the

Skip to main content