Checklists for software errors, setup, and tool workflows.

Fix Git Clone Connection Timed Out on AWS CodeCommit

If you're seeing git clone connection timed out when trying to clone a repositor...

How to Fix Windows 11 Installation Assistant Stuck at 99%

You're running the Windows 11 Installation Assistant, it reaches 99%, and then... nothing. Th...

How to Fix Nginx 'Upstream Connection Refused' Error

When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...

Fix 'package.json Not Found' After Cloning a Repository

Symptom

You clone a repository from GitHub (or another remote), change into the directory...

Fix Windows 11 Blue Screen After Update Stuck in Restart Loop

After a Windows 11 update, your PC may show a blue screen error and then restart repeatedly, neve...

How to Set Up a Wildcard Subdomain DNS Record in Cloudflare

If you need all subdomains (e.g., *.example.com) to point to the same IP or service, a wildcard D...