config
Certificate Transparency requirement not met
net::ERR_CERTIFICATE_TRANSPARENCY_REQUIRED
Fixes
- 1.Ensure your CA provides SCTs (Signed Certificate Timestamps) embedded in the certificate
- 2.Use a CA that supports Certificate Transparency (most public CAs do since 2018)
- 3.Check if the TLS extension for CT is being served via OCSP stapling or TLS extension
sslcertificate-transparencyCT
Related Errors
config3 fixes
Nginx 502 Bad Gateway - upstream unavailable
502 Bad Gateway|upstream prematurely closed connection
- •Verify the upstream server is running and listening on the expected address/port
- •Increase proxy_read_timeout and proxy_connect_timeout for slow backends
config3 fixes
Nginx 504 Gateway Timeout
504 Gateway Time-?out|upstream timed out.*reading response
- •Increase proxy_read_timeout (default 60s): proxy_read_timeout 300s
- •Optimize the backend endpoint that's taking too long to respond
config3 fixes
Nginx redirect loop
rewrite or internal redirection cycle|return 301.*too many redirects
- •Check for conflicting rewrite rules that redirect back and forth (HTTP→HTTPS→HTTP)
- •Use 'return 301' instead of 'rewrite' for simple redirects to avoid rule interaction