Checklists for software errors, setup, and tool workflows.

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Fix Nginx Upstream Connection Refused Socket Error

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

Fix Docker Overlay Network Not Found Error
When you see network not found for an overlay network in Docker, it usually means th...

Update Git SSL Certificates to Fix 'unable to get local issuer'
If you see fatal: unable to access 'https://...': SSL certificate problem: unable t...

Fix Firefox Secure Connection Failed DNS Error
You try to visit a website in Firefox and see 'Secure Connection Failed' with an error li...

Fix Nginx Upstream Connection Refused in Docker
You have Nginx running, either on the host or in a container, proxying to another Docker containe...

Fix Windows Cannot Access Shared Folder with Password Protected Sharing
You try to access a shared folder from another computer on your network and get an error: "Wi...

Checklists for software errors, setup, and tool workflows.

Latest checklists

Fix Nginx Upstream Connection Refused Socket Error

Fix Docker Overlay Network Not Found Error

Update Git SSL Certificates to Fix 'unable to get local issuer'

Fix Firefox Secure Connection Failed DNS Error

Fix Nginx Upstream Connection Refused in Docker

Fix Windows Cannot Access Shared Folder with Password Protected Sharing

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