Office & Excel
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.
Office & Excel
How-To Guides
Black Friday 2026: The Tech Worth Buying If the Price Drops
System Center
How to Deploy Windows 11 Feature Updates via SCCM
Windows Server
DHCP Failover on Windows Server: Setup and Real-World Gotchas
Consumer Devices & Hardware
Mechanical Keyboards: Switch Types Explained for Normal People
System Center
SCCM Client Push Installation: Troubleshooting Common Failures
Office & Excel
Excel Formulas Every IT Person Should Know
System Center
How to Build a Custom SCCM Report with SQL
Windows Server
DNS on Windows Server: The Settings That Actually Matter
General Tech
Moving from Gmail, Thunderbird or Apple Mail to Outlook? How to Convert MBOX to PST
Consumer Devices & Hardware
How to Set Up a Dual-Monitor Workspace Properly
System Center