Safari / IE not loading site - Windows Server

My domain is:

I ran this command: i used acme wacs.exe to install certs for both and

It produced this output: The site loads fine in Chrome, but not IE/Safari

My web server is (include version): Windows VM

The operating system my web server runs on is (include version):Windows 2012

My hosting provider, if applicable, is:

I can login to a root shell on my machine (yes or no, or I don’t know): yes

I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you’re using Certbot):

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Hi @jharding,

What kind of error or problem do you get in those other browsers? Are all three running on the same machine and configured in the same way?

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Thanks for following up. When I view on safari iPhone it pops up saying it requires a client certificate then shows two long number/char strings that look the same.

Chrome on Mac just loads the background color of the site and seems to stall. Similar on Windows.

I do have an IIS rule redirecting http to https not sure if that would be causing any issues.

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It’s true that the site is sending a TLS 1.2 CertificateRequest message to the client, which I guess is prompting Safari to actively try to authenticate with a client certificate. Maybe you need to configure the web server not to request client authentication.

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That was it thank you. The SSL Settings radio button was selected to Accept vs Ignore

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Actually that seemed to work for Safari but not IE…

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Hi @jharding

yep, IE11 doesn’t work, Edge works.

But: There is only JavaScript. Looks like IE11 doesn’t understand that.

I developed it with React. Likely more of a React issue and not LetsEncrypt at this point. I did start with create React app, so not sure why this would be.



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