nodejs https website cannot be displayed in IE11

Question

Our ssl-website https://www.redmedical.de cannot be displayed in IE11 (dnserror.html - page cannot be displayed). All (all!) other browsers can !

Our webserver is a node.js app with default cipher settings. The certificate is enhanced and valid (as you can see in Chrome, FF, Safari, Opera, ...)

Any hint what is going on here? I have tried to change the cipher settings with no success. All hints in the web aim at browser settings, dispite the fact that they all do not work, there must be an solution on the server side. I don't think that people will change there browser settings for our site...

Thanks for any help

Answer 1

IE doesn't like the Content-Encoding: deflate header that you're sending.

When set to Content-Encoding: gzip , it seems to work.

How have you implemented HTTP compression? It appears to be broken. If you're using Express, there is compression middleware that you should probably use instead of rolling your own.

Also, you're also applying HTTP compression to images, which is a big no-no .