Checklists for software errors, setup, and tool workflows.

How to Fix a Detached HEAD in Git Using SourceTree

If you open SourceTree and see a message like “You are in ‘detached HEAD’ state,” it means your w...

Windows 11 Taskbar Icons Missing? Fixes That Actually Work

You boot up Windows 11 and notice the taskbar icons are gone—no Start button, no search, no syste...

Fix VSCode Terminal Permission Denied in Python venv

If you see bash: /path/to/venv/bin/activate: Permission denied when trying to activa...

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...

Fix 'pip externally managed environment' Permission Denied Error

If you see error: externally-managed-environment when trying to install a Python pac...

Git Fatal: Refusing to Merge Unrelated Histories – Workaround

You try to merge two Git branches and get this error:

fatal: refusing to merge unre...