Checklists for software errors, setup, and tool workflows.

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Latest checklists

If you see connect() failed (111: Connection refused) or connect() failed (13:...

Fix 'node sass build failed' During npm install
When running npm install, you might see an error like "node sass build f...

How to Install Python Packages Without Permission Denied Errors
You try to install a Python package with pip install somepackage and get a Per...

Fix ERR_NAME_NOT_RESOLVED in Chrome: Proxy Settings Guide
If you see ERR_NAME_NOT_RESOLVED in Chrome, it usually means the browser can'...

Fixing Node Sass Build Failures on Linux
If you're running npm install on a Linux machine and get a build failure for

How to Repair Windows Security App Issues
If the Windows Security app won't open, shows a blank screen, or gives errors like "This ...