Knowledge base for software setup, errors, and daily tool work.

Fixing Nginx Upstream Connection Refused on Port 443

You see "upstream connection refused" in your Nginx error log when proxying requests to p...

Fix Nginx 'upstream connection refused' When Talking to PHP-FPM

You're seeing upstream connection refused in your Nginx error log, and your site...

Chrome Startup Crash Due to Malware: Detection and Fix

If Chrome crashes immediately upon launch, or opens to a blank page before closing, malware may b...

Fix Error 0x80070080 When Windows Update Stuck

You see error 0x80070080 and Windows Update hangs at a certain percentage. This usually means a p...

Fix Windows Update Error 0x80070005 by Taking Ownership

What Causes Error 0x80070005?

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

Fix Windows 11 Blue Screen After Update Uninstall Problem

You uninstalled a Windows 11 update to fix another issue, but now you're stuck with a blue sc...