Category Archives: Active Directory

Creating a new Azure Active Directory instance

It seems a simple thing, but when you need to create an additional directory for testing/dev purposes, you may ask yourself how to create. In this Tutorial, we are going…

How to remove the several Organization Units that are protected against accidental deletion

In some situation an entire structure of Organization Units must be deleted, and by default new OUs are automatic defined to protect them against deletion which requires the administrator to…

How to disable all accounts from an Organization Unit structure

In some cases, the administrator must disable all accounts from a specific Organization Unit. We can approach this task from either Active Directory Users and Computers or using PowerShell. Solution…

Configuring Tombstone Lifetime (TSL) period

By default a tombstone lifetime is 180  days (it used to be 60 days on Windows Server 2003 R2), however we can change for any number that we like or…

Adding a domain in Azure Active Directory

Adding and validating a domain in Microsoft Azure using the new portal based on Azure Resource Manager (ARM). The new portal has been out there for a while, but since…

Using DNS Console cache to troubleshoot a geo-location block issue

How to use DNS Manager to troubleshoot a geo-location restriction in the firewall. Solution I had this interesting situation in one of my customers, where he wasn’t able to resolve…

How to list all static hosts in DNS

In this Tutorial we are going over the process to list all static entries in any given DNZ zone. Solution If you are responsible to manage the Active Directory DNS…

How to renew the ADFS certificate

Replacing a certificate that is about to expire on the Active Directory Federation Services (ADFS) server. The process is simple and we will show all the steps in this Tutorial….

Auditing logon events with FortiGate

How to enable Auditing on Active Directory. One of my customers was implementing web filtering using Active Directory with Fortigate firewall appliances. The solution requires a couple of Event IDs…

Azure AD Connect– In-place Upgrade

How to perform a in-place upgrade to AAD Connect (Azure Active Directory Connect).  When using DirSync tool there are two ways to upgrade to the AAD Connect: in-place upgrade method…