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

Fix VSCode Debugger 'launch.json Not Found' Error

You open the Run and Debug view in VSCode, click the green play button, and get an error: "launch...

MongoDB Compass: Authentication Failed vs Connection Refused

When using MongoDB Compass, you might see either "authentication failed" or "connection refused."...

Certbot Renewal Failed Due to Nginx Configuration: How to Fix

Fix High CPU Usage by MsMpEng.exe (Windows Defender)

If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...

Fix Windows Update Error 0x800f081f with DISM Restore Health

If you see error 0x800f081f when running Windows Update or DISM, it usually means a system file i...

Fix Windows Update 504 Gateway Timeout: Network Troubleshooting Guide

When Windows Update fails with a 504 Gateway Timeout error, it usually means the update server is...