I'm developing on my local machine with a self-signed certificate in IIS. Everytime I open Chrome and go to my site, initially I get an error 'Your connection is not private'. I then have to click 'Advanced' and 'Proceed to [sitename]'. I don't want to perform that manual action every time. Also I want to run via https on my local machine, so please no advice of not doing that.

I followed the steps here: Exporting the certificate to a file and then importing it in Chrome.

I see the certificate in my Trusted Root Certificate Authorities. Also when I now click the lock icon in my address bar I see this:

enter image description here

enter image description here

I already restarted Chrome, but keep getting this message. What can I do?

  • what are the specifics of the error (the certificate window is covering it in the screenshot)? Could be a number of issues. – Jim G. Jul 30 '15 at 22:14
  • Just to confirm you installed it correctly. Does it work how you want it in IE? – Ramhound Jul 30 '15 at 22:21
  • @JimG.: image added – Flo Jul 30 '15 at 22:48
  • @Ramhound IE also warns me, but also in Chrome when I click continue I can access the site over https. So it should be okay right? – Flo Jul 30 '15 at 22:48
  • Is it secure, of course it is, you just have not trusted the certificate hence the warning. Can you located the certificate within the certmgr for the user your using? Control Panel\All Control Panel Items? Windows is indicating based on the error the certificate is NOT in the Trusted Root Certification Authorities Store for either the Machine or the User. – Ramhound Jul 30 '15 at 22:54

Yes this post is old. Here is the answer:

Why is this happening? The commonName was deprecated in RFC 2818 (published in 2000), but support still remains in a number of TLS clients including Internet Explorer. https://www.chromestatus.com/feature/4981025180483584

What do I need to do? You need to issue a web certificate using Certificates MMC console for Computer account and specify the san: attribute.

Refer to the Microsoft article below: https://technet.microsoft.com/en-us/library/ff625722(v=ws.10).aspx

  • The Microsoft article is missing the creation of the "select certificate enrollment policy" between step 11 and 12 – Wouter Vanherck May 25 '18 at 13:08

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