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Category: AD-CS

Active Directory Certificate Services

AD-CS / GPO

🔐 Fix: RDP Certificate Warning – “The certificate is not from a trusted certifying authority”

✨ Observation While connecting to a server using Remote Desktop Protocol (RDP) via IP address, a warning appears: ⚠️ “The identity of the remote computer cannot be verified. Do you …

AD-CS / EXCHANGE-ONPREM / Office Online Server (OOS) / SUBSCRIPTION EDITION (SE)

Installing Office Online Server (OOS) on Windows Server 2022/2025 – A Practical Guide

Introduction: Why Office Online Server is Needed? In modern Exchange environments, offering seamless file previews within Outlook on the Web (OWA) greatly enhances user experience. While PDF and TXT files …

AD-CS

🛡️ Hardening, Backing Up, and Auditing Enterprise CA – Best Practices

Welcome back! In this final part of my AD CS series, I’ll focus on something often overlooked—but critical: securing and maintaining your Enterprise Certificate Authority. An improperly secured CA can …

AD-CS

🔁 OCSP and Certificate Revocation in AD CS – Step by Step

Hi again! So far, I’ve configured AD CS to issue certificates and secure internal systems like IIS and Exchange. But what if a certificate gets compromised or needs to be …

AD-CS

🔐 Issuing SSL Certificates to Internal Web Servers (IIS/Exchange) Using AD CS

Hey there! So far, I’ve covered everything from installing AD CS to configuring auto-enrollment. Now it’s time to put those certificates to good use—let’s issue SSL certificates for internal web …

AD-CS

⚙️ Enabling Auto-Enrollment via Group Policy (AD CS)

Hi everyone! In the last post, I walked through how I created and published custom certificate templates. Now it’s time to automate the certificate issuance process using Auto-Enrollment. This is …

AD-CS

🧩 Creating and Publishing Certificate Templates in AD CS

Hey everyone! Now that I’ve installed the Enterprise Root CA, it’s time to move forward and start issuing certificates. But before any certificates can be requested or auto-enrolled, I need …

AD-CS

🏗️ Installing the Enterprise Root CA (Step-by-Step)

Hi again! Now that I’ve introduced what AD CS is and why we use it, it’s time to get our hands dirty by installing an Enterprise Root Certificate Authority. This …

AD-CS

🔐 Introduction to Active Directory Certificate Services (AD CS)

Hi everyone! In this blog series, I’m going to take you on a journey through Active Directory Certificate Services (AD CS)—from the basics to more advanced concepts. If you’ve ever …

ACTIVE-DIRECTORY / AD-CS / EXCHANGE-ONPREM / MICROSOFT-EXCHANGE

Securing Exchange OWA/ECP with a Self-Signed Certificate from Enterprise CA

🔧 Overview By default, Exchange Server uses a self-signed certificate for OWA (Outlook Web App) and ECP (Exchange Control Panel). However, this cert is not trusted by clients, leading to …

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