CODEWITHSUNDEEP
ssliis
Ashutosh
Ashutosh

Reputation: 4675

SSL certificate is not working for subdomain with www

We are running our website on IIS. In the domain settings, example.com and www.example.com are pointing to same IP Address.

The website works fine for https://example.com and https://www.example.com and https://stage.example.com

but for:

https://www.stage.example.com

We are getting Not Secure error.

Is it related to how SSL certificate is setup?

Added http & https bindings in IIS for both stage.example.com and www.stage.example.com

Upvotes: 1

Views: 2314

Answers (1)

samwu
samwu

Reputation: 5205

If you have a non-www and fully-qualified domain name of the same domain, a single domain (standard) SSL certificate would be enough to cover both. However, if you have multiple subdomains that you need to cover, then you need a wildcard SSL certificate.

For example:

Scenario 1: If you want to secure only two versions of your domains — domain.com and www.domain.com — a single domain SSL would be fine.

Scenario 2: If you want to secure the first level of subdomains (other than www.domain.com) — such as mail.domain.com or test.domain.com — a single domain SSL will not be enough. You must buy a wildcard SSL certificate

Upvotes: 1

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