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

Fix Git SSL Certificate Problem Unable to Get Local Issuer on Ubuntu

When you see git SSL certificate problem: unable to get local issuer certificate on ...

Fixing Cloudflare SSL Full Strict Sync Issues

When you enable Cloudflare's SSL/TLS encryption mode to Full (Strict), your site may stop syn...

How to Reinstall Windows Security App (Microsoft Defender)

If the Windows Security app (Microsoft Defender) is missing, crashing, or not opening, reinstalli...

Fix Node Version Incompatible with npm Package Error

How to Use a Cloudflare DNS Propagation Checker Tool

After you change a DNS record in Cloudflare, it takes time for the update to spread across the in...

Taskbar Icons Disappeared After Signing Out: Fix Guide

You sign out of Windows, sign back in, and the taskbar icons you pinned are gone—or some system i...