Windows · BitLocker BitLocker Drive Encryption BitLocker is the full-volume encryption feature built into Windows, and understanding how it uses the TPM to seal its key and how its recovery…
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Windows · DFS DFS Namespaces and DFS Replication DFS Namespaces gives users one consistent folder path no matter which server actually holds the files, and DFS Replication is the engine…
PowerShell · Basics How the PowerShell Pipeline Passes Objects PowerShell’s pipeline hands live .NET objects from one cmdlet to the next, one object at a time, and understanding exactly how…
Codex · Part 1 Codex — Part 1 — What It Is and Why It Matters for IT Engineers Codex is OpenAI’s terminal-based coding agent, built to read, edit, and…
Active Directory · Troubleshooting Password Changes Not Replicating Between Sites A user changes their password at one site and can log on there immediately, but a domain controller at another…
Codex · Part 2 Codex — Part 2 — Installing Codex CLI (and Fixing It When It Breaks) A practical install walkthrough for Windows, macOS, and Linux, plus a troubleshooting…
Codex · Part 3 Codex — Part 3 — Creating and Navigating Your First Project What actually happens the first time you point Codex at a folder, how it explores…
Codex · Part 4 Codex — Part 4 — Understanding and Writing AGENTS.md AGENTS.md is Codex’s persistent-instructions file, the equivalent of CLAUDE.md covered earlier in the Claude Code series, with…
Codex · Part 5 Codex — Part 5 — Creating a Custom Skill A Codex Skill packages a repeatable procedure so it runs on demand instead of being re-explained in…
Codex · Part 6 Codex — Part 6 — Subagents in Codex Codex can spawn subagents that run in parallel threads and report back a consolidated summary, which keeps a…
Codex · Part 7 Codex — Part 7 — Approval Modes, Sandboxing, and config.toml Codex’s safety model runs on two independent layers, what it can technically do and when it…
Codex · Part 8 Codex — Part 8 — Common Codex Issues and Fixes A standing reference for the runtime problems that show up after installation: shared config that will…
Codex · Part 9 Codex — Part 9 — Connecting External Tools with MCP MCP lets Codex read and act on systems outside your local filesystem, shared across the desktop…
Claude Code · Part 1 Claude Code — Part 1 — What It Is and Why It Matters for IT Engineers Claude Code is a terminal-based AI agent that reads,…
Claude Code · Part 2 Claude Code — Part 2 — Installing Claude Code (and Fixing It When It Breaks) A practical install walkthrough for Windows, WSL, macOS, and Linux,…
Claude Code · Part 3 Claude Code — Part 3 — Creating and Navigating Your First Project What actually happens the first time you point Claude Code at a folder,…
Claude Code · Part 4 Claude Code — Part 4 — Understanding and Writing CLAUDE.md CLAUDE.md is the file that stops you from re-explaining the same project conventions every single…
Claude Code · Part 5 Claude Code — Part 5 — Creating a Custom Skill A Skill packages a repeatable procedure so it runs on demand instead of being re-explained…
Claude Code · Part 6 Claude Code — Part 6 — Subagents and the Agent Tool A subagent runs a side task in its own context window and reports back…
Claude Code · Part 7 Claude Code — Part 7 — Permissions, settings.json, and Hooks CLAUDE.md shapes what Claude tries to do. Permissions and hooks control what Claude Code actually…
Claude Code · Part 8 Claude Code — Part 8 — Common Claude Code Issues and Fixes A standing reference for the runtime problems that show up after installation: settings…
Claude Code · Part 9 Claude Code — Part 9 — Connecting External Tools with MCP MCP lets Claude Code read and act on systems outside your local filesystem, a…
PowerShell · Basics PowerShell Splatting — Cleaning Up Commands with Many Parameters A practical guide to splatting, the PowerShell technique that turns a command buried under ten inline parameters into…
Active Directory · Troubleshooting Event 4771 — Kerberos Pre-Authentication Failed Event 4771 fires every time a domain controller refuses to hand out a Ticket Granting Ticket, and the Failure Code…