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

Nginx 502 Bad Gateway: A Practical Troubleshooting Guide

Seeing a 502 Bad Gateway from Nginx usually means the upstream server (like PHP-FPM, uWSGI, or a ...

Fix PowerShell Authentication Failed Credentials Error

OneDrive Sync File Locked: Step-by-Step Checklist

If you see "file locked" or "file in use" in OneDrive, it means another process or user has the f...

How to Fix Chrome Profile SSL Certificate Error

You open Chrome and see an error like “Your connection is not private” or “NET::ERR_CERT_COMMON_N...

Fix Windows Defender Slow Startup in Windows 10

If your Windows 10 PC takes longer to boot up and you suspect Windows Defender is the cause, you'...

Fix OneDrive Sync Not Syncing Files on Ubuntu

If you're using OneDrive on Ubuntu and files aren't syncing, you're not alone. This guide walks t...