Forest Preparation Skype for Business

skype for business

While installing a new Skype for Business enviroment i walked in to a error when prepping the forest. After searching a while on TechNet and other forums i found out that the schema’s couldn’t run from the Skype for Business Front end server.

The execution failed the parameter is incorrect 00000057

Error: An error occurred: “Microsoft.Rtc.Management.ADConnect.ADOperationException” “Active Directory operation failed on “”. You cannot retry this operation: “The parameter is incorrect 00000057: LdapErr: DSID-0C090D87, comment: Error in attribute conversion operation, data 0, v2580″”

Forest Prep Error


Before running these commands, please copy the files: “ExternalSchema.ldf”; “ServerSchema.ldf”; “BackCompatSchema.ldf” and “VersionSchema.ldf” from “C:\Program Files\Skype for Business Server 2015\Deployment\Setup” to a folder created in the domain controller called as “schema” created in the root for the Local Disk “C”. TechNet Article about ldifde

Make sure you run the commands in the exact same order.

ldifde -i -v -k -s -f C:\schema\ExternalSchema.ldf -c DC=x "DC=skypedev,DC=nl" -j C:\schemas

ldifde -i -v -k -s -f  C:\schema\ServerSchema.ldf -c DC=x "DC=skypedev,DC=nl" -j C:\schemas

ldifde -i -v -k -s -f  C:\schema\BackCompatSchema.ldf -c DC=x "DC=skypedev,DC=nl" -j C:\schemas

ldifde -i -v -k -s -f  C:\schema\VersionSchema.ldf -c DC=x "DC=skypedev,DC=nl" -j C:\schemas


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Challenge yourself to ‘Inbox Zero’

Inbox Zero

Do you also recognize a overloading email inbox, to much unreaded emails and no time to clean up, ‘Inbox Zero’ may be the solution for your problem!

Yesterday i was reading a blog (sorry, it’s in Dutch) from Michel Bouman from Microsoft. Last year he wrote a blog about how he implemented ‘Inbox Zero’ method by Merlin Mann in his life. In short terms, you have 4 folders(categories):

  • Action
  • Archive
  • Sometime
  • Waiting For

Every email you receive you will validate agains the rules below:

– Delete or Archive emails with no action requirered.
– Reply emails with action request, only if possible in two minutes.
– Emails above two minutes move to Action folder.
– Emails with action who you can delegate, you’ll forward inmediately, add your email to BCC to track. (explaination setting this up later in this blog)
– Interesting emails without action, containing a lot of text you can move to the folder  ‘Sometime’. This kind of emails you read in the morning with your first coffee or at the end of the day.

Now that you have categorized your email you’ll have to block some time in your agenda to process the Action emails.

There are many thing that i want to improve in my life, efficiency is one of them (ongoing process)! I spend a lot of my time everyday with chasing, reading and answering emails (Work and Private), This blog was opening my eyes, it’s time to tackle this issue.

Let’s give it a try and Challenge yourself.

Starting the Challenge to ‘Inbox Zero’

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How to block Facebook from your PC


Facebook wants to sell every Ad and you on the Web. The social network will show ads to non-Facebook users on other websites.

It’s official: there’s nowhere to hide. (haha not for you, read below!)

Companies like Facebook and Google offer you their services for free, but free always has a cost. Advertising pays the bills and the contributors, and these big companies separate themselves from serving up ads that are better targeted than other smaller networks. By tracking you across the web and building a profile (Big Data) that helps which ads you’re going to click most likely.


Some people don’t want to be tracked by FB, infact nobody should be! So don’t register or delete your account (I already did so). Facebook announced last Thursday evening that it is changing the way its advertising works across the web. FB doesn’t just serve ads on and in its mobile apps like Messenger, the company also has a network of third-party sites and apps for displaying ads. It’s called the Audience Network, and there has always been one big difference between the way Facebook’s off-site ads work as compared to Google: They were only shown to Facebook users. Now, that will no longer be the case. So it’s time to block Facebook.

How to block Facebook?

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Block the Blue Coat Intermediate CA from Windows

Blue Coat Systems

Symantec has gotten in hot water for issuing rogue certificates (source). While Symantec has agreed to certificate transparency, Blue Coat systems is a known operator of MITM services they sell to enterprises, nation-states and governments, and this certificate would allow Blue Coat to issue arbitrary MITM certificates.

OSX instruction can be find over here (By Filippo Valsorda)

Click on Continue Reading for the full instructions

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Privacy and Anonymity



Privacy is an increasingly rare commodity these days. To find out what kind of information is there about you do a search for yourself on, you might be surprised at the number of companies that claim to have information about you and your relatives.

That’s because your personal information, including your email address, phone number and daily activities on Social Networks and apps, are worth a lot of money to legitimate businesses, your new employer, government and bad guys (read hackers).

The bad guys just want to steal from you and sell it on the DarkNet. Legitimate Companies want to know as much about you as possible, so they can sell you more products and services or serve you ads that are highly relevant to your preferences. And your possible new employer might get the wrong impression of you.

So i’m going to talk about a few steps that helps you, to protect your information.

There are a couple ways to secure your own privacy without having a lot of tools installed or the need of know how.

  • Information you Share
  • Email address
  • Fake Identity
  • Browsing anonymously
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