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Stop Repeated Active Directory Lockouts: Find the Caller Computer (Event ID 4740) with a PowerShell HTML + Email Report
Active DirectoryAutomationPowerShellSecurity

Stop Repeated Active Directory Lockouts: Find the Caller Computer (Event ID 4740) with a PowerShell HTML + Email Report

by antoniorennvickMay 12, 2026May 12, 2026

If you’ve ever dealt with “my account is locked again” tickets, you know the real pain isn’t unlocking the account — it’s finding what keeps locking it. When a user gets locked out in Active…

Active Directory Health Check with PowerShell – Full Forest Report & Interactive HTML Dashboard
Active DirectoryIdentity & Access ManagementMicrosoftPowerShellWindows Server

Active Directory Health Check with PowerShell – Full Forest Report & Interactive HTML Dashboard

by antoniorennvickMay 5, 2026May 7, 2026

Active Directory Health Check with PowerShell + HTML Dashboard Run a complete Active Directory health check using PowerShell and automatically generate a clean, readable HTML dashboard. This guide shows you how to assess domain health,…

Generating GPO Change Audit Reports Using PowerShell (Part 2)
Active DirectoryAutomationMicrosoftPowerShellSecurity & AuditingWindows ServerWindows Server

Generating GPO Change Audit Reports Using PowerShell (Part 2)

by antoniorennvickMay 4, 2026May 7, 2026

In Part 1, we automated Group Policy Object (GPO) backups using PowerShell and Task Scheduler. Backups alone are valuable—but their real power comes from visibility. Auditors don’t ask if you back up GPOs.They ask: “Show…

Automating Group Policy Object Backups with PowerShell and Task Scheduler (Part 1)
Active DirectoryMicrosoftPowerShellWindows Server

Automating Group Policy Object Backups with PowerShell and Task Scheduler (Part 1)

by antoniorennvickMay 4, 2026May 6, 2026

Group Policy Objects (GPOs) are a core component of Active Directory environments. They control security settings, user configurations, software deployment, and many other critical aspects of Windows infrastructure. Despite their importance, GPOs are often overlooked…

How to Send Password Expiry Reminder Emails with PowerShell and Microsoft Graph API (Certificate Auth)
Active DirectoryPowerShell

How to Send Password Expiry Reminder Emails with PowerShell and Microsoft Graph API (Certificate Auth)

by antoniorennvickApril 23, 2026May 7, 2026

Estimated read time: ~10–12 minutes Audience: Windows/AD administrators, M365/Entra admins, automation engineers Overview Password expiry is one of the most common causes of user lockouts and helpdesk calls. A small PowerShell automation that detects upcoming…

Active DirectoryMicrosoft EntraPowerShellSecurity

Incorrect version of TLS – Installing the latest Azure AD connect

by antoniorennvickSeptember 27, 2021April 27, 2026

While you trying to install the latest Azure AD connect you might get the below error. This is because the latest version is required to have TLS 1.2 to provide secure communication. How to solve…

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Recent Posts

  • Stop Repeated Active Directory Lockouts: Find the Caller Computer (Event ID 4740) with a PowerShell HTML + Email Report
  • Azure AD / Microsoft Entra Conditional Access “Bypass” via Phantom Device Registration & PRT Abuse — A Deep Technical Breakdown
  • ConsentFix v3 and OAuth Consent Abuse in Microsoft Entra ID: Deep‑Dive Detection & Hardening for Microsoft 365
  • Active Directory Health Check with PowerShell – Full Forest Report & Interactive HTML Dashboard
  • Sample GPO Monthly Change Audit Report (HTML Output)

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