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

How to Fix Git Push Rejected Non-Fast-Forward Upstream

When you run git push and see rejected! non-fast-forward, it means your...

Fix 'Python Command Not Found' in Anaconda on Windows

VS Code IntelliSense Not Working for C++: Practical Fixes

If you're editing C++ code in Visual Studio Code and IntelliSense stops working—no auto-compl...

Fix DNS Probe Finished NXDOMAIN on Custom DNS Server

If you see “DNS PROBE FINISHED NXDOMAIN” in Chrome or another browser while using a custom DNS se...

Taskbar Icons Disappeared After Signing Out: Fix Guide

You sign out of Windows, sign back in, and the taskbar icons you pinned are gone—or some system i...

Fix Windows Security App Not Starting on Windows 11

You click the Windows Security icon or try to open it from Settings, but nothing happens. The app...