Checklists for software errors, setup, and tool workflows.

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Fix Nginx Upstream Connection Refused in Proxy Pass

When Nginx returns a 502 Bad Gateway or logs upstream connection refused

Fix Bluetooth Not Showing in Device Manager on Windows 11
If you open Device Manager on Windows 11 and Bluetooth is completely absent—no adapter listed und...

Fix Docker Network Missing After Reboot
After a system reboot, you may find that a Docker network you created is no longer listed when yo...

Windows 11 Installation Assistant Stuck at 99%: How to Reset and Finish
You're upgrading to Windows 11 using the Installation Assistant, and it gets stuck at 99% for...

Fix Cloudflare Wildcard Subdomain Not Working with WordPress
You set up a wildcard DNS record in Cloudflare (e.g., *.example.com) expecting all subdomains to ...

How to Fix Git Push Failed Due to Large File
You try to push a commit to a remote repository, and Git rejects it with an error about file size...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Nginx Upstream Connection Refused in Proxy Pass

Fix Bluetooth Not Showing in Device Manager on Windows 11

Fix Docker Network Missing After Reboot

Windows 11 Installation Assistant Stuck at 99%: How to Reset and Finish

Fix Cloudflare Wildcard Subdomain Not Working with WordPress

How to Fix Git Push Failed Due to Large File

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