Checklists for software errors, setup, and tool workflows.

1. Reproduce

2. Isolate

3. Apply

4. Verify

Latest checklists

If your origin server is rejecting the Cloudflare origin certificate—perhaps because of a SAN mis...

If you see node-sass build failed python not found when running npm install

Fix Python Permission Denied When Installing Packages on Windows
You run pip install somepackage on Windows and get a PermissionError

Fix ERR_CONNECTION_RESET in Chrome on Mac
If you see ERR_CONNECTION_RESET in Chrome on your Mac, the browser cannot establ...

How to Fix npm Package Json Not Found Error
When you run npm install or npm start and see npm ERR! package.js...

Repair Corrupt Windows Search Index Database
When Windows Search stops returning files or emails, or the search box hangs, a corrupt index dat...