I have a user that when they try to log into Duke Progress Energy's website at https://www.progress-energy.com/app/loginregistration/login.aspx it will redirect them to a "one time authentication" page which requires them to use a one-time key to log in on a new computer. When going to this one-time website (secure8.i-doxs.net) it will get an error message that says...
This page can't be displayed
Turn on TLS 1.0, TLS 1.1, and TLS 1.2 in the Advanced settings and try connecting to https://secure8.i-doxs.net again. If this error persists, contact your site administrator.
Well, I'm the site administrator and I can confirm that TLS 1.0, 1.1, and 1.2 are all enabled and forced by GPO. Restarting IE and rebooting did not help. Chrome and Firefox both work flawlessly.
Edit: This is IE 11 on Windows 8.1 Enterprise.