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My Website Glitz Cleaner shows "ssl_error_bad_cert_domain"

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I was unable to open my website Glitz Cleaner in Firefox Browser. I was getting error "ssl_error_bad_cert_domain". Kindly help how to resolve this issue. I talked to hosting company they said SSL is active from their end. Is this browser issue or hosting issue?

I was unable to open my website [https://glitzcleaner.in/ Glitz Cleaner] in Firefox Browser. I was getting error "ssl_error_bad_cert_domain". Kindly help how to resolve this issue. I talked to hosting company they said SSL is active from their end. Is this browser issue or hosting issue?

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It must be due to removed "subject common name" fallback support from certificate validation. This fallback mode was previously enabled only for manually installed certificates. The CA Browser Forum Baseline Requirements have required the presence of the "subjectAltName" extension since 2012, and use of the subject common name was deprecated in RFC 2818.