Awesome!
My WinXP is now working!
Thanks @jhoffner and @myjinxin2015. It was very simple solution :-) But not for me

I'm still using Windows XP quite often and the only problem with any web site I can recall is limited availability of installed video codecs for browsers to use, so it's probably not about Windows XP.

@vudulin same to me, are you using Windows XP? remove s from https should fix the issue ;-)

@vudulin This is a weird error that seems to be happening perhaps based off of specific network conditions. You are the 2nd person to report this. You can try changing the page to not use https which should function as a workaround until the issue can be fully resolved.

I have the same output error - the result of tests or submitting is a blank page and message "ERR_SSL_VERSION_OR_CIPHER_MISMATCH"
What to do to fix it?

Lets pick this up on the github thread that you created.

It also seems like you replied to a bunch of comments below with the same exact text. Did you mean to do that? I've delete them as its noise.

Might be a browser issue. I just got 5 duplicate notifications of the above comment and just delete one duplicate that still showed up here, not sure if you are having issues with comments as well - but it seems like maybe your scripts are not loading properly.