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Knowledge Base

Subdomain with www prefix is marked as not secured, even though wildcard certificate is installed for main domain in Plesk

 
plesk for linuxplesk for windowssubdomainstechnical questions

Symptoms

Second level subdomain test.login.example.com is marked as "not secure", even though a wildcard certificate is installed for *.example.com

Cause

Wildcard certificates cover only one level of subdomains.

Resolution

Issue certificate for test.login.example.com including www prefix.

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