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

Fixing Nginx Upstream Connection Refused in Load Balancing

When Nginx load balancing returns upstream connection refused, it means one or more ...

VS Code IntelliSense Not Working for Java: Fix Guide

You open a Java file in VS Code, start typing, and get no code completion, no parameter hints, no...

Fix Git Push Rejected Non Fast Forward Error

How to Fix Taskbar Icons Not Loading on Startup

You boot your PC, but the taskbar icons—volume, network, battery, or pinned apps—don't show u...

Fix PowerShell Execution Policy Restricted in VS Code

When you try to run a PowerShell script in the Visual Studio Code integrated terminal and see an ...

Fix NET::ERR_CERT_AUTHORITY_INVALID in Chrome

When Chrome shows 'NET::ERR_CERT_AUTHORITY_INVALID', it means the browser cannot verify t...