Checklists for software errors, setup, and tool workflows.

Fix Windows Update Service Not Running for System Restore

You might see “System Restore did not complete successfully” or “Windows Update service is not ru...

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

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

Fix Windows Update Error 0x80070005 by Taking Ownership

What Causes Error 0x80070005?

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

How to Rebuild Taskbar Icon Cache in Windows 10

If your Windows 10 taskbar icons appear blank, wrong, or missing, the icon cache may be corrupted...

Fix NET::ERR_CERT_AUTHORITY_INVALID in Chrome Safe Mode

When you see NET::ERR_CERT_AUTHORITY_INVALID in Chrome while running in Safe Mod...

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

When Git reports SSL certificate problem: unable to get local issuer certificate, it...