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

How to Fix Windows Security Certificate Error Not Trusted

You're browsing or running an app and Windows throws a security warning: the certificate is not t...

Fix Windows Defender Virus Definition Update Failed

You see an error that Windows Defender virus definition update failed. This usually happens when ...

Fix Windows Security Authentication Error 0x80070035

Fix Windows Search Not Showing Results Due to Authentication Error

You type in the Windows Search bar, but nothing appears—or you see a brief error message about au...

Practical VSCode Debugger Setup for Node.js

You've written a Node.js app in VSCode, but when you hit F5, nothing happens or the debugger won'...

Nginx 404 Not Found Troubleshooting Checklist

When nginx returns a 404 Not Found error, it means the server is running but cannot locate the re...