403 - Forbidden: Access is denied in Chrome

Question

I installed a new certificate on IIS7.

After I installed the certificate, I opened the site in Chrome and received the following message:

I clicked Ok and now when I browse to the site in Chrome, I get an error:

403 - Forbidden: Access is denied

If I browse in Incognito, I get the message again and if I click Cancel, I can browse the site.

When I go back to a normal browsing window, I get the Access is denied error again.

I don't get the error in Edge.

(If I click on Certificate information, it says "This CA Root certificate is not trusted.")

I'm not sure where it is getting that certificate from. It's not an actual certificate. — Daniel Gee, Nov 12 '18 at 04:24
No, the site has a valid certificate. It seems that there is an invalid certificate installed on my PC. (I've never had to select a certificate for an HTTPS site before?) — Daniel Gee, Nov 12 '18 at 07:57
@garethTheRed, brilliant, thank you. Can you post your answer as an answer so that I can mark it as a solution? — Daniel Gee, Nov 12 '18 at 08:19

score 4 · Accepted Answer · answered Nov 12 '18 at 08:31

You have accidentally configured client authentication on your IIS server. The server now expects your browser to send a certificate to the server in order to authenticate you.

Start the IIS Management Console and with your site selected in the left-hand pane, open the SSL Settings page.

You need to have Require SSL checked in order to enable SSL/TLS on the server (for HTTPS) and also need to ensure that Client certificates: is set to Ignore so that IIS doesn't instruct the browser to send a client authentication certificate.

403 - Forbidden: Access is denied in Chrome

1 Answers1