Knowledge base for software setup, errors, and daily tool work.

Setting Up Cloudflare Wildcard Subdomains for Multiple Sites

If you manage multiple sites or services on different subdomains (like app.example.com, blog.exam...

Fix 'Git Remote Origin Already Exists' When Updating Remote URL

Fix ERR_NAME_NOT_RESOLVED in Chrome Safe Mode

If you see ERR_NAME_NOT_RESOLVED in Chrome while browsing in safe mode (Incognit...

Nginx Redirect Loop Not Working: Causes and Fixes

You've set up a redirect in Nginx, but instead of landing on the intended URL, the browser sh...

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...

Windows 11 Update Failed Blue Screen Rollback Fix

You start your PC after a Windows 11 update and get a blue screen, then it rolls back. This artic...