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

Nginx 502 Bad Gateway: PHP-FPM Fix Guide

Seeing a 502 Bad Gateway error from Nginx usually means it can't reach PHP-FPM. This is common af...

Fix 'Outlook Path Not Found' Error After Migration

How to Fix Task Scheduler Not Running on Ubuntu

If you rely on scheduled tasks on Ubuntu—whether via cron, systemd timers, or anacron—and they su...

Fix Windows Defender Rate Limit Error via Registry Edit

If Windows Defender shows a rate limit error—often with messages like "Threat service has stopped...

Fix Task Scheduler SSL Certificate Expired Error

If a scheduled task that connects to a remote service (e.g., web API, FTP over SSL) starts failin...

Fix Windows Defender Real-Time Protection Turning Off Automatically

If Windows Defender's real-time protection keeps turning off automatically, your PC may be vulner...