Domain Name Mismatch Between Certificate and Hostname

6/10 Medium

SSL certificates fail to validate when the domain name in the certificate does not match the exact domain being visited, including subdomain variations (www vs. non-www). This hostname mismatch triggers trust errors for otherwise valid certificates.

SSLTLSX.509
Category
config
Workaround
solid
Stage
deploy
Freshness
persistent
Scope
cross_platform
Recurring
Yes
Buyer Type
team

Sources

Collection History

Query: “What are the most common pain points with SSL/TLS for developers in 2025?”4/9/2026

Wrong domain name (hostname mismatch). The certificate must match the exact domain the user is visiting (including subdomains like www vs. non-www). domain mismatch errors when the certificate does not match the requested website

Created: 4/9/2026Updated: 4/9/2026