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I bought certificate only for name_domain.com under the configuration for IIS 8 (on Windows Server 2012).

I have 301 redirects from www.name_domain.com to https://name_domain.com. If I open the following link in a browser: www.name_domain.com , there's a certificate error.

Should I buy a new certificate or maybe there is another solution to the problem?

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Did you install the certificate and bind it to your site as covered here? Did you completely clear the cache in your browsers? There are online SSL check sites, as mentioned in the link above. –  dan Feb 24 '14 at 20:37
The certificate was installed. If we go to the website name_domain.com we have redirect to name_domain.com and there is no problem with certificate. The problem is when we write www.name_domian.com in the browser- then firstly it is chcecking the certificate and the next step the redirect to name_domain.com is made. I installed the certificate in another way than it is presented under the link you sent me. Namely, I generated a PFX file, clicked on it twice and then installed. The next steps of the IIS8 configuration were those from the points 7 and of your link. –  user3346985 Feb 25 '14 at 13:04

1 Answer 1

You should be able to configure a different virtual host for you www version of the domain using these instructions. When the certificate is handled by a separated virtual host than the www removal redirect, it should check the certificate when redirecting.

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