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

How to Flush DNS on Windows 11 to Fix Internet Issues

If your internet seems slow, websites won't load, or you see DNS-related errors, a corrupted ...

Fix ENOENT Error: package.json Not Found in React App

When running npm start or npm install in a React app, you may see an er...

Fix Windows Explorer Restarting After Crash

If Windows Explorer (explorer.exe) crashes and then keeps restarting, you may see the desktop fla...

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 Chrome Certificate Error: Invalid Authority with Proxy Settings

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

Fix Git Push Rejected Non Fast Forward Error