Software comparisons, alternatives, and tool decision notes.

Fix Windows Defender Real-Time Protection Configuration Error

You open Windows Security and see a message that real-time protection is turned off or has a conf...

Fix VS Code IntelliSense Not Working in WSL

You open a project in VS Code connected to WSL (Windows Subsystem for Linux), and IntelliSense ju...

Fix Cloudflare Error 521 After a Server Update

If you see Cloudflare error 521 after updating your server, the origin web server is refusing the...

Fix 'git pull failed index.lock file exists' Error

When running git pull, you may see an error like:

fatal: Unable to create &#...

How to Fix Nginx 'Upstream Connection Refused' Error

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

Fix VS Code 'Permission Denied' When Saving Files

You're editing a file in Visual Studio Code, hit Ctrl+S, and get an error: "Failed to sav...