I was recently preparing for Office 365 certification (exam 70-346), I came up with several questions about firewall ports used by O365. I explored and then I thought I should document for others 🙂 Ports Used by Office 365 Following are the ports used for various purposes by Office 365. TCP 443 - ADFS, Microsoft ... Read more
In this article, I'll show you to get all O365 users which have not been assigned any license. Prerequisites Download and install the following modules. Microsoft Online Service Sign-in Assistant for IT Professionals RTW Windows Azure Active Directory Module for Windows PowerShell (64-bit version) Get a List of Unlicensed Users in Office 365 To get ... Read more
Just like we added AD users in a group with the help of Ad-ADGroupMember PowerShell cmdlet, we can also remove AD users from a group using PowerShell. Remove AD Members from Group Using PowerShell 1. Open PowerShell with elevated privileges. 2. Execute the following cmdlet if you would like to remove a single or multiple users ... Read more
When AD users change office, their postal addresses become incorrect and you need to change them. As you know this can be inefficient and hectic if you change postal address of each user one by one using active directory users and computer ADUC MMC snap-in. In such scenarios, PowerShell is the preferred choice. So Let's get started ... Read more
An RODC holds a read-only copy of the Active Directory database and doesn't allow any changes in AD data. It is mostly deployed in branch offices due to poor physical security. If some one gets access to the RODC, he won't be able to change the global data. If an intruder somehow manages to change the data on ... Read more
I list below the simple method to get siDHistory attribute of migrated AD users. List AD Migrated User sIDHistory Attribute Step 1. Open PowerShell with elevated privileges on the computer with the target domain. Step 2. Execute the following command. dsquery * -Filter "(samaccountname=<username>)" -Attr sIDHistory
CBS stands for component based servicing. CBS.log is a file which include logs about components when they get installed or uninstalled during updates. If you want to check these files, they are located at %windir%\Logs\CBS\ You will see two files in CBS folder, one is CBS.log and the other is CBS.persist.log. CBS.persist.log is the older ... Read more
Following are the most widely used admin roles in Office 365 with their description. Role Description Global administrator It is by default a user who signs up to buy 0365 services. The global administrator can access all administrative features and It is the only user who assigns admin roles to other users. Billing administrator Billing ... Read more
If you want to remove an existing DHCP failover in Windows Server 2016, you can do it either by using server manager (Most suitable in scenarios where you are using Windows server desktop) or PowerShell (Most suitable in scenarios where you are using Windows server core). This article shows both procedures. Deconfigure DHCP Failover Using Server Manager Step 1. ... Read more
In previous article, we added a new domain in an existing forest using server manager. In this guide, I'll focus on adding a new domain using PowerShell. Prerequisites Static IP is configured Administrator account has strong password Firewall is turned off DNS server settings in TCP/IPv4 are correct and they are pointing to a domain ... Read more