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

Fixing NGINX Upstream Connection Refused SSL Errors

When NGINX logs upstream connection refused for an SSL backend, it usually means the...

Fix Missing Taskbar Icons After Uninstalling a Program

You uninstall a program, and suddenly some taskbar icons disappear—even for apps you didn't r...

Windows Update Service Setup Guide: Enable & Configure

When Windows Update fails, the underlying service is often the culprit. This guide walks through ...

Git Push Large File Timeout Error: Fixes and Workarounds

You're trying to push a commit that includes a large file—maybe a dataset, a binary, or a gen...

How to Show Hidden Icons on Taskbar in Windows 10

You may notice that some app icons in the system tray (notification area) are hidden behind an up...

Fix 'pip install' Permission Denied on Ubuntu