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

UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...

Fix PowerShell High CPU Usage with Error 0x80070005

If you see PowerShell consuming high CPU alongside error 0x80070005 (Access Denied), the issue is...

Fix Laravel Artisan Command Not Found on Ubuntu

Fix Task Scheduler 'File Locked' Errors When Tasks Don't Run

You set up a scheduled task in Windows Task Scheduler, but it never runs. When you check the hist...

Why Docker Container Exits with Code 1: A Checklist

You start a Docker container, it runs for a second, then stops with exit code 1. This is a common...

Outlook Token Expired Renewal Steps

If Outlook suddenly asks for your password repeatedly, shows 'Need Password' in the status bar, o...