Knowledge base for software setup, errors, and daily tool work.

Fixing Cloudflare Tunnel DNS Errors: A Practical Guide

If you're seeing DNS errors when using Cloudflare Tunnel (cloudflared), the tunnel might be conne...

Windows Update Stuck at 100% Loading but Not Installing: How to Fix

You've waited for the update to reach 100%, but it just sits there—not installing, not erroring. ...

How to Fix PostgreSQL Password Authentication Failed for User

You see psql: error: FATAL: password authentication failed for user "youruser" when ...

Docker Container Exit Code 0: Why It Restarts and How to Fix

You start a Docker container, it runs briefly, then stops with exit code 0. But when you check it...

Fix kubectl Apply Forbidden in AKS: Permission Denied

Fix Windows Defender Stuck on Loading Black Screen

If Windows Defender (Microsoft Defender Antivirus) hangs on a black screen with a spinning or fro...