Checklists for software errors, setup, and tool workflows.

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Fix Nginx Config Test Failure After Adding SSL Certificate

You added an SSL certificate to your Nginx server block, ran nginx -t, and got an er...

Fix OneDrive Sync Connection Refused on Windows 11

If you see "connection refused" when OneDrive tries to sync on Windows 11, the app can't reach Mi...

Fix Jupyter Notebook Token Not Working on Localhost

If you see a token prompt when opening Jupyter Notebook on localhost, and entering the token fail...

FFmpeg Video and Audio Out of Sync: Practical Fixes

You encoded a video with FFmpeg and now the audio drifts or is completely out of sync. This is a ...

Fix 'Port Already Allocated' Error on Windows 10 for Chrome

When launching Chrome or a web app that uses Chrome, you might see an error like "Port alread...

Fix Windows Search 504 Gateway Timeout and Network Reset
You run a Windows search and get a 504 gateway timeout, often after a network reset or VPN change...