Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you see a message like 'You are in 'detached HEAD' state' after checking out a...

You run git push and see: ! [rejected] main -> main (non-fast-forward)

Fix VSCode Git Authentication Failed: Reset Credentials
If you see a "Git authentication failed" error in Visual Studio Code, it usually means yo...

Fix Git Lock File Not Deleted After Crash
If Git reports a lock file error after a crash, it usually means a previous Git operation was int...

Fix ERR_CONNECTION_RESET Caused by Firewall Blocking Chrome
If you see ERR_CONNECTION_RESET in Chrome, it usually means something interrupte...

Fix VS Code 'Cannot Save File: Permission Denied' on Mac
You're editing a file in VS Code on your Mac, hit save, and get: 'Failed to save:...