
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...
Software troubleshooting desk

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

You set up a wildcard DNS record in Cloudflare (e.g., *.example.com) expecting all subdomains to ...

When Nginx returns 502 Bad Gateway or logs upstream connection refused timeout...

When you enable Cloudflare's SSL/TLS encryption mode to Full (Strict), your site may stop syn...

If you're seeing a Cloudflare 521 error on a wildcard subdomain (e.g., *.example.com), the or...

You run git clone and after a long pause see connection timed out. This...