Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If you're hitting a MemoryError in Python while reading or processing a large fi...

If Windows Explorer keeps restarting and you see error 0xc0000005, it usually means a critical pr...

After upgrading Windows 10 to 11 (or a major feature update), many users find that typing p...

Fixing pip Externally-Managed Environment Errors
If you see the error error: externally-managed-environment when running pip in...

How to Enable Breakpoints in VS Code
If you've set a breakpoint in Visual Studio Code and it's not being hit, or you're no...

npm package.json Not Found After npm init
You run npm init, answer the prompts, and then try to install a package or run a scr...