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 ...

pnpm frozen-lockfile vs pnpm-lockfile: When to Use Each

If you've worked with pnpm, you've probably seen --frozen-lockfile in CI scripts and...

Fix Windows Activation Version Mismatch Using slmgr

If you see an error like "The version of this file is not compatible with the version of Windows ...

Fix Windows Defender Cache Size Too Large

If you notice that Windows Defender's cache folder is eating up gigabytes of space, you're not al...

Fix Task Scheduler Sync Issues with Microsoft Account

How to Fix Windows Update Error 0x80070002

You click Check for updates and after a while get error 0x80070002. It usually means Windows Upda...