Checklists for software errors, setup, and tool workflows.

How to Fix Cloudflare 521 Error with Wildcard Subdomains

If you're seeing a Cloudflare 521 error on a wildcard subdomain (e.g., *.example.com), the or...

How to Enable Windows Defender Real-Time Protection in Windows 10

If Windows Defender real-time protection is off, your PC is more vulnerable to malware. You may s...

Fix Windows Update Service Not Running After SFC Scan

If you ran an SFC scan to fix system file corruption and now the Windows Update service won't...

How to Recover from Detached HEAD in Git

You're working in a Git repository and suddenly see a message like 'You are in 'detac...

VS Code Source Control Not Detecting Changes After Git Reinstall

If you reinstalled Git and VS Code's Source Control panel stopped detecting file changes, you...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

You run git clone https://example.com/repo.git and get:

fatal: unable to acc...