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

How to Clear DNS Cache in Windows 10 via Command Prompt

If you're seeing outdated website content, getting DNS errors, or websites won't load after chang...

SSH Permission Denied (Publickey) on EC2: Setup Fixes

If you're seeing "Permission denied (publickey)" when trying to SSH into an AWS EC2 instance, the...

PowerShell Command Not Found but Works in CMD

How to Fix CrashLoopBackOff Error: Container Exit Codes

You see CrashLoopBackOff in your pod status, and the container keeps restarting. Thi...

Fix Docker Container Crash Loop with Exit Code 1

You start a Docker container and it immediately stops, then restarts, stops again—the classic cra...

Task Scheduler Setup Checklist for Beginners

Setting up a scheduled task in Windows often seems straightforward until a task doesn't run, runs...