Windows Server
Andrew Armstrong
Andrew Armstrong is a UK-based IT professional with 26+ years of hands-on experience in Windows, Windows Server, SCCM/ConfigMgr, Intune, Active Directory, PowerShell and enterprise infrastructure.
He founded TechyGeeksHome in 2010 and has published 770+ practical guides to real-world IT problems. He also builds free Windows utilities, including Ultimate Settings Panel, which has been downloaded over 850,000 times.
Windows Server
Windows Tips & Troubleshooting
Driver Problems on Windows: How to Diagnose and Roll Back Safely
Windows Server
Configuring Certificate Services (AD CS) on Windows Server: A Beginner’s Guide
Windows Server
How to Automate AD User Offboarding with PowerShell
Consumer Devices & Hardware
PC Cooling Explained: Air vs AIO and What You Actually Need
Windows Server
How to Rename a Domain Controller Safely
Windows Tips & Troubleshooting
How to Fix File Explorer Crashing or Freezing on Windows 11
Windows Server
Active Directory Federation Services (AD FS): Setup and Common Errors
Windows Server
Auditing Active Directory with PowerShell: Practical Queries
Consumer Devices & Hardware
How to Clean a PC Properly: Dust, Paste and Thermals
How-To Guides
Active Directory Health Check with PowerShell: Free Script and What Each Check Means
How-To Guides