Checklists for software errors, setup, and tool workflows.

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Latest checklists

Fix VS Code Git Auth Failed with Personal Access Token

Fix VS Code Git Auth Failed with Personal Access Token

If you're using a personal access token (PAT) for Git authentication in VS Code and seeing &#...

Fix Python Permission Denied When Running pip install -r requirements.txt

Fix Python Permission Denied When Running pip install -r requirements.txt

You run pip install -r requirements.txt and get a PermissionError or

How to Fix Windows Update Error 0x800f081f (Missing Files)

How to Fix Windows Update Error 0x800f081f (Missing Files)

You see error 0x800f081f when running Windows Update, often with a message like 'The source f...

How to Validate Nginx Configuration Before Reload

How to Validate Nginx Configuration Before Reload

Reloading nginx with a broken configuration can take your site down. The safe way is to test the ...

Fix Chrome Certificate Error: Invalid Authority with Proxy Settings

Fix Chrome Certificate Error: Invalid Authority with Proxy Settings

You open Chrome and see NET::ERR_CERT_AUTHORITY_INVALID on every site, even trus...

Fix Nginx Upstream Connection Refused Behind Cloudflare

Fix Nginx Upstream Connection Refused Behind Cloudflare

If you see upstream connection refused in your Nginx error logs while using Cloudfla...