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How to Fix Nginx Upstream Connection Refused on Port 80

When nginx logs show "upstream connection refused" while connecting to port 80, it means ...

Fix Windows Update Error 0x80070005 by Taking Ownership

What Causes Error 0x80070005?

This error usually means Windows Update doesn't have pe...

Fix Chrome Access Violation Error When Printing

You click Print in Chrome and instead of a preview you get an error: "Access violation at add...

Fix Windows Defender Real-Time Protection Not Running

You open Windows Security and see a yellow warning: "Real-time protection is off." Or you...

Python Requests: timeout vs timeout Seconds Explained

Checklist for Nginx Configuration Test Failure

When you run nginx -t and get a failure, the server won't reload or restart. Thi...