IT Consultant Everyday Notes

Just some problems/solutions storage

PKI: Chrome 58 gives a warning with HTTPS connection to a Web Server

Scenario: Web Server protected by a certificate issued by Internal Certification Authority (Microsoft ADCS).

Certificate has a single Subject Name on it Internet Explorer works fine, only Chrome is affected



This Server could not prove that it is <server name>; its security certificate is from [missing_subjectAltName]. This may be caused by a misconfiguration or an attacker intercepting your connection.

Resolution: I reissued the certificate and added Subject Alternative Name (SAN) with the same FQDN to it. After that I assigned the new certificate to the Web Server interface and restarted IIS. Chrome connects to the web server without any warnings now.


More about SAN:

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